171 DBMS_SQLDIAG

The DBMS_SQLDIAG package provides an interface to the SQL Diagnosability functionality.

This chapter contains the following topics:

• DBMS_SQLDIAG Overview

• DBMS_SQLDIAG Security Model

• DBMS_SQLDIAG Constants

• Summary of DBMS_SQLDIAG Subprograms

See Also:

Oracle Database Administrator's Guide for more information about "Managing Diagnostic Data"

171.1 DBMS_SQLDIAG Overview

In the rare case that a SQL statement fails with a critical error, you can run the SQL Repair Advisor to try to repair the failed statement by using the DBMS_SQLDIAG package subprograms.

The SQL Repair Advisor analyzes the statement and in many cases recommends a patch to repair the statement. If you implement the recommendation, the applied SQL patch circumvents the failure by causing the query optimizer to choose an alternate execution plan for future executions.

See Also:

Oracle Database Administrator's Guide for more information about how to run the SQL Repair Advisor using the DBMS_SQLDIAG package subprograms.

171.2 DBMS_SQLDIAG Security Model

You must have the ADVISOR role to execute the DBMS_SQLDIAG package.

171.3 DBMS_SQLDIAG Constants

DBMS_SQLDIAG defines constants to use when specifying parameter values.

These constants are shown in the following tables:

• Table 171-1 describes the name of SQL repair advisor as seen by the advisor framework

• Table 171-2 describes SQLDIAG advisor task scope parameter values

• Table 171-3 describes SQLDIAG advisor time_limit constants

• Table 171-4 describes possible formats for a report

• Table 171-5 describes possible levels of detail in the report

• Table 171-6 describes possible report sections (comma delimited)

• Table 171-7 describes possible values for the problem_type parameter of the CREATE_DIAGNOSIS_TASK Functions

• Table 171-8 describes possible values for the _sql_findings_mode parameter

Table 171-1 DBMS_SQLDIAG Constants - SQLDIAG Advisor Name

Constant	Type	Value	Description
ADV_SQL_DIAG_NAME	VARCHAR2(18)	SQL Repair Advisor	Name of SQL repair advisor as seen by the advisor framework

Table 171-2 DBMS_SQLDIAG Constants - SQLDIAG Advisor Task Scope Parameter Values

Constant	Type	Value	Description
SCOPE_COMPREHENSIVE	VARCHAR2(13)	COMPREHENSIVE	Detailed analysis of the problem which may take more time to execute
SCOPE_LIMITED	VARCHAR2(7)	LIMITED	Brief analysis of the problem

Table 171-3 DBMS_SQLDIAG Constants - SQLDIAG Advisor time_limit Constants

Constant	Type	Value	Description
TIME_LIMIT_DEFAULT	NUMBER	1800	Default time limit for analysis of the problem

Table 171-4 DBMS_SQLDIAG Constants - Report Type (possible values) Constants

Constant	Type	Value	Description
TYPE_HTML	VARCHAR2(4)	HTML	Report from the REPORT_DIAGNOSIS_TASK Function in HTML form
TYPE_TEXT	VARCHAR2(4)	TEXT	Report from the REPORT_DIAGNOSIS_TASK Function in text form
TYPE_XML	VARCHAR2(3)	XML	Report from the REPORT_DIAGNOSIS_TASK Function in XML form

Table 171-5 DBMS_SQLDIAG Constants - Report Level (possible values) Constants

Constant	Type	Value	Description
LEVEL_ALL	VARCHAR2(3)	ALL	Complete report including annotations about statements skipped over
LEVEL_BASIC	VARCHAR2(5)	BASIC	Shows information about every statement analyzed, including recommendations not implemented
LEVEL_TYPICAL	VARCHAR2(7)	TYPICAL	Simple report shows only information about the actions taken by the advisor.

Table 171-6 DBMS_SQLDIAG Constants - Report Section (possible values) Constants

Constant	Type	Value	Description
SECTION_ALL	VARCHAR2(3)	ALL	All statements
SECTION_ERRORS	VARCHAR2(6)	ERRORS	Statements with errors
SECTION_FINDINGS	VARCHAR2(8)	FINDINGS	Tuning findings
SECTION_INFORMATION	VARCHAR2(11)	INFORMATION	General information
SECTION_PLANS	VARCHAR2(5)	PLANS	Explain plans
SECTION_SUMMARY	VARCHAR2(7)	SUMMARY	Summary information

Table 171-7 DBMS_SQLDIAG Constants - Problem Type Constants

Constant	Type	Value	Description
PROBLEM_TYPE_PERFORMANCE	NUMBER	1	User suspects this is a performance problem
PROBLEM_TYPE_WRONG_RESULTS	NUMBER	2	User suspects the query is giving inconsistent results
PROBLEM_TYPE_COMPILATION_ERROR	NUMBER	3	User sees a crash in compilation
PROBLEM_TYPE_EXECUTION_ERROR	NUMBER	4	User sees a crash in execution
PROBLEM_TYPE_ALT_PLAN_GEN	NUMBER	5	User to explore all alternative plans

Table 171-8 DBMS_SQLDIAG Constants - Findings Filter Constants

Constant	Type	Value	Description
SQLDIAG_FINDINGS_ALL	NUMBER	1	Show all possible findings
SQLDIAG_FINDINGS_VALIDATION	NUMBER	2	Show status of validation rules over structures
SQLDIAG_FINDINGS_FEATURES	NUMBER	3	Show only features used by the query
SQLDIAG_FINDINGS_FILTER_PLANS	NUMBER	4	Show the alternative plans generated by the advisor
SQLDIAG_FINDINGS_CR_DIFF	NUMBER	5	Show difference between two plans
SQLDIAG_FINDINGS_MASK_VARIANT	NUMBER	6	Mask info for testing
SQLDIAG_FINDINGS_OBJ_FEATURES	NUMBER	7	Show features usage history
SQLDIAG_FINDINGS_BASIC_INFO	NUMBER	8	Show the alternative plans generated by the advisor

171.4 Summary of DBMS_SQLDIAG Subprograms

This table lists the DBMS_SQLDIAG subprograms and briefly describes them.

Table 171-9 DBMS_SQLDIAG Package Subprograms

Subprogram	Description
ACCEPT_SQL_PATCH Function & Procedure	Accepts a recommended SQL patch as recommended by the specified SQL diagnosis task
ALTER_SQL_PATCH Procedure	Alters specific attributes of an existing SQL patch object
CANCEL_DIAGNOSIS_TASK Procedure	Cancels a diagnostic task
CREATE_DIAGNOSIS_TASK Functions	Creates a diagnostic task in order to diagnose a single SQL statement
CREATE_SQL_PATCH Function	Creates an SQL patch based on a set of user specified hints for specific statements identified by SQL text.
CREATE_STGTAB_SQLPATCH Procedure	Creates the staging table used for transporting SQL patches from one system to another
DROP_DIAGNOSIS_TASK Procedure	Drops a diagnostic task
DROP_SQL_PATCH Procedure	Drops the named SQL patch from the database
EXECUTE_DIAGNOSIS_TASK Procedure	Executes a diagnostic task
EXPLAIN_SQL_TESTCASE Function	Explains a SQL test case
EXPORT_SQL_TESTCASE Procedures	Exports a SQL test case to a directory
EXPORT_SQL_TESTCASE_DIR_BY_INC Function	Generates a SQL Test Case corresponding to the incident ID passed as an argument.
EXPORT_SQL_TESTCASE_DIR_BY_TXT Function	Generates a SQL Test Case corresponding to the SQL passed as an argument
GET_FIX_CONTROL Function	Returns the value of fix control for a given bug number
GET_SQL Function	Imports a SQL test case
IMPORT_SQL_TESTCASE Procedures	Imports a SQL test case into a schema
INCIDENTID_2_SQL Procedure	Initializes a sql_setrow from an incident ID
INTERRUPT_DIAGNOSIS_TASK Procedure	Interrupts a diagnostic task
LOAD_SQLSET_FROM_TCB Function	Loads a SQLSET from Test Case Builder (TCB) file
PACK_STGTAB_SQLPATCH Procedure	SQL patches into the staging table created by the CREATE_STGTAB_SQLPATCH Procedure
REPLAY_SQL_TESTCASE Function	Reports on a diagnostic task
REPORT_DIAGNOSIS_TASK Function	Reports on a diagnostic task
RESET_DIAGNOSIS_TASK Procedure	Resets a diagnostic task
RESUME_DIAGNOSIS_TASK Procedure	Resumes a diagnostic task
SET_DIAGNOSIS_TASK_PARAMETER Procedure	Sets a diagnosis task parameter
SQL_DIAGNOSE_AND_REPAIR Function	Diagnoses a given SQL statement for a given SQL ID for the given problem type.
UNPACK_STGTAB_SQLPATCH Procedure	Unpacks from the staging table populated by a call to the PACK_STGTAB_SQLPATCH Procedure, using the patch data stored in the staging table to create patches on this system

171.4.1 ACCEPT_SQL_PATCH Function & Procedure

This procedure accepts a recommended SQL patch as recommended by the specified SQL diagnosis task.

Syntax

DBMS_SQLDIAG.ACCEPT_SQL_PATCH (
   task_name      IN  VARCHAR2,
   object_id      IN  NUMBER := NULL,
   name           IN  VARCHAR2 := NULL,
   description    IN  VARCHAR2 := NULL,
   category       IN  VARCHAR2 := NULL,
   task_owner     IN  VARCHAR2 := NULL,
   replace        IN  BOOLEAN := FALSE,
   force_match    IN  BOOLEAN := FALSE)
 RETURN VARCHAR2;

DBMS_SQLDIAG.ACCEPT_SQL_PATCH (
   task_name      IN  VARCHAR2,
   object_id      IN  NUMBER := NULL,
   name           IN  VARCHAR2 := NULL,
   description    IN  VARCHAR2 := NULL,
   category       IN  VARCHAR2 := NULL,
   task_owner     IN  VARCHAR2 := NULL,
   replace        IN  BOOLEAN := FALSE,
   force_match    IN  BOOLEAN := FALSE);

Parameters

Table 171-10 ACCEPT_SQL_PATCH Function & Procedure Parameters

Parameter	Description
taskname	Name of the SQL diagnosis task
object_id	Identifier of the advisor framework object representing the SQL statement associated to the diagnosis task
name	Name of the patch. It cannot contain double quotation marks. The name is case sensitive. If not specified, the system will generate a unique name for the SQL patch.
description	User specified string describing the purpose of this SQL patch. Maximum size of description is 500.
category	Category name which must match the value of the SQLDIAGNOSE_CATEGORY parameter in a session for the session to use this patch. It defaults to the value DEFAULT. This is also the default of the SQLDIAGNOSE_CATEGORY parameter. The category must be a valid Oracle identifier. The category name specified is always converted to upper case. The combination of the normalized SQL text and category name create a unique key for a patch. An accept will fail if this combination is duplicated.
task_owner	Owner of the diagnosis task. This is an optional parameter that has to be specified to accept a SQL Patch associated to a diagnosis task owned by another user. The current user is the default value.
replace	If the patch already exists, it will be replaced if this argument is TRUE. It is an error to pass a name that is already being used for another signature/category pair, even with replace set to TRUE.
force_match	If TRUE this causes SQL Patches to target all SQL statements which have the same text after normalizing all literal values into bind variables. (Note that if a combination of literal values and bind values is used in a SQL statement, no bind transformation occurs.) This is analogous to the matching algorithm used by the FORCE option of the CURSOR_SHARING parameter. If FALSE, literals are not transformed. This is analogous to the matching algorithm used by the EXACT option of the CURSOR_SHARING parameter.

Return Values

Name of the SQL patch

Usage Notes

Requires CREATE ANY SQL PROFILE privilege

171.4.2 ALTER_SQL_PATCH Procedure

This procedure alters specific attributes of an existing SQL patch object.

Syntax

DBMS_SQLDIAG.ALTER_SQL_PATCH (
   name            IN  VARCHAR2,
   attribute_name  IN  VARCHAR2,
   attribute_value IN  VARCHAR2);

Parameters

Table 171-11 ALTER_SQL_PATCH Procedure Parameters

Parameter	Description
name	Name of SQL patch to alter.
attribute_name	Name of SQL patch to alter. Possible values: STATUS -> can be set to ENABLED or DISABLED NAME -> can be reset to a valid name (must be a valid Oracle identifier and must be unique). DESCRIPTION -> can be set to any string of size no more than 500 CATEGORY -> can be reset to a valid category name (must be valid Oracle identifier and must be unique when combined with normalized SQL text) This parameter is mandatory and is case sensitive.
attribute_value	New value of the attribute. See attribute_name for valid attribute values. This parameter is mandatory.

Usage Notes

Requires ALTER ANY SQL PATCH privilege

171.4.3 CANCEL_DIAGNOSIS_TASK Procedure

This procedure cancels a diagnostic task.

Syntax

DBMS_SQLDIAG.CANCEL_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-12 CANCEL_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.4 CREATE_DIAGNOSIS_TASK Functions

This function creates a diagnostic task in order to diagnose a single SQL statement. It returns a SQL diagnosis task unique name

Syntax

Prepares the diagnosis of a single statement given its text:

DBMS_SQLDIAG.CREATE_DIAGNOSIS_TASK (
    sql_text           IN   CLOB,
    bind_list          IN   sql_binds := NULL,
    user_name          IN   VARCHAR2  := NULL,
    scope              IN   VARCHAR2  := SCOPE_COMPREHENSIVE,
    time_limit         IN   NUMBER    := TIME_LIMIT_DEFAULT,
    task_name          IN   VARCHAR2  := NULL,
    description        IN   VARCHAR2  := NULL,
    problem_type       IN   NUMBER    := PROBLEM_TYPE_PERFORMANCE)
  RETURN VARCHAR2;

Prepares the diagnosis of a single statement from the Cursor Cache given its identifier:

DBMS_SQLDIAG.CREATE_DIAGNOSIS_TASK (
    sql_id             IN   VARCHAR2,
    plan_hash_value    IN   NUMBER    := NULL,
    scope              IN   VARCHAR2  := SCOPE_COMPREHENSIVE,
    time_limit         IN   NUMBER    := TIME_LIMIT_DEFAULT,
    task_name          IN   VARCHAR2  := NULL,
    description        IN   VARCHAR2  := NULL,
    problem_type       IN   NUMBER    := PROBLEM_TYPE_PERFORMANCE)
  RETURN VARCHAR2;

Prepares the diagnosis of a Sqlset:

DBMS_SQLDIAG.CREATE_DIAGNOSIS_TASK (
    sqlset_name       IN VARCHAR2,
    basic_filter      IN VARCHAR2 :=  NULL,
    object_filter     IN VARCHAR2 :=  NULL,
    rank1             IN VARCHAR2 :=  NULL,
    rank2             IN VARCHAR2 :=  NULL,
    rank3             IN VARCHAR2 :=  NULL,
    result_percentage IN NUMBER   :=  NULL,
    result_limit      IN NUMBER   :=  NULL,
    scope             IN VARCHAR2 :=  SCOPE_COMPREHENSIVE,
    time_limit        IN NUMBER   :=  TIME_LIMIT_DEFAULT,
    task_name         IN VARCHAR2 :=  NULL,
    description       IN VARCHAR2 :=  NULL,
    plan_filter       IN VARCHAR2 :=  'MAX_ELAPSED_TIME',
    sqlset_owner      IN VARCHAR2 :=  NULL,
    problem_type      IN NUMBER   :=  PROBLEM_TYPE_PERFORMANCE)  RETURN VARCHAR2;

Parameters

Table 171-13 CREATE_DIAGNOSIS_TASK Function Parameters

Parameter	Description
sql_text	Text of a SQL statement
bind_list	Set of bind values
user_name	Username for who the statement/sqlset will be diagnosed
scope	Diagnosis scope (limited/comprehensive)
time_limit	Maximum duration in seconds for the diagnosis session
task_name	Optional diagnosis task name
description	Maximum of 256 SQL diagnosis session description
problem_type	Determines the goal of the task. Possible values are: PROBLEM_TYPE_WRONG_RESULTS PROBLEM_TYPE_COMPILATION_ERROR PROBLEM_TYPE_EXECUTION_ERROR
sql_id	Identifier of the statement
plan_hash_value	Hash value of the SQL execution plan
sqlset_name	Sqlset name
basic_filter	SQL predicate to filter the SQL from the SQL tuning set (STS)
object_filter	Object filter
rank(i)	Order-by clause on the selected SQL
result_percentage	Percentage on the sum of a ranking measure
result_limit	Top L(imit) SQL from (filtered/ranked) SQL
plan_filter	Plan filter. It is applicable in case there are multiple plans (plan_hash_value). This filter allows selecting one plan (plan_hash_value) only. Possible values are: LAST_GENERATED: plan with most recent timestamp FIRST_GENERATED: opposite to LAST_GENERATED LAST_LOADED: plan with most recent first_load_time stat info FIRST_LOADED: opposite to LAST_LOADED MAX_ELAPSED_TIME: plan with maximum elapsed time MAX_BUFFER_GETS: plan with maximum buffer gets MAX_DISK_READS: plan with maximum disk reads MAX_DIRECT_WRITES: plan with maximum direct writes MAX_OPTIMIZER_COST: plan with maximum optimum cost
sqlset_owner	Owner of the sqlset, or null for current schema owner

171.4.5 CREATE_SQL_PATCH Function

This function creates a SQL patch based on a set of user specified hints for specific statements identified by SQL text.

A SQL patch is usually created automatically by the SQL Repair Advisor to prevent any errors during the compilation or execution of a SQL statement. This function provides a way to manually create a SQL patch based on a set of hints that resolves the error.

Syntax

DBMS_SQLDIAG.CREATE_SQL_PATCH (
    sql_text        IN   CLOB,
    hint_text       IN   CLOB,
    name            IN   VARCHAR2   := NULL,
    description     IN   VARCHAR2   := NULL,
    category        IN   VARCHAR2   := NULL,
    validate        IN   BOOLEAN    := TRUE)
RETURN VARCHAR2; 

DBMS_SQLDIAG.CREATE_SQL_PATCH (
    sql_id          IN   VARCHAR2,
    hint_text       IN   CLOB,
    name            IN   VARCHAR2   := NULL,
    description     IN   VARCHAR2   := NULL,
    category        IN   VARCHAR2   := NULL,
    validate        IN   BOOLEAN    := TRUE)
RETURN VARCHAR2; 

Parameters

Table 171-14 CREATE_SQL_PATCH Function Parameters

Parameter	Description
sql_text	Text of the SQL statement
sql_id	The SQL identifier for the SQL statement
hint_text	Hints to include in the SQL patch
name	Optional SQL patch name
description	Description of the SQL patch
category	Category name
validate	Whether to validate the provided hints

Return Values

Both functions return the SQL patch name.

171.4.6 CREATE_STGTAB_SQLPATCH Procedure

This procedure creates the staging table used for transporting SQL patches from one system to another.

Syntax

DBMS_SQLDIAG.CREATE_STGTAB_SQLPATCH (
   table_name       IN  VARCHAR2,
   schema_name      IN  VARCHAR2 := NULL,
   tablespace_name  IN  VARCHAR2 := NULL);

Parameters

Table 171-15 CREATE_STGTAB_SQLPATCH Procedure Parameters

Parameter	Description
table_name	(Mandatory) Name of the table to create (case-sensitive)
schema_name	Schema to create the table in, or NULL for current schema (case-sensitive)
tablespace_name	Tablespace to store the staging table within, or NULL for current user's default tablespace (case-sensitive)

171.4.7 DROP_DIAGNOSIS_TASK Procedure

This procedure drops a diagnostic task.

Syntax

DBMS_SQLDIAG.DROP_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-16 DROP_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.8 DROP_SQL_PATCH Procedure

This procedure drops the named SQL patch from the database.

Syntax

DBMS_SQLDIAG.DROP_SQL_PATCH (
   name     IN  VARCHAR2,   ignore   IN  BOOLEAN := FALSE);

Parameters

Table 171-17 DROP_SQL_PATCH Function & Procedure Parameters

Parameter	Description
name	Name of patch to be dropped. The name is case sensitive.
ignore	Ignore errors due to object not existing.

Usage Notes

Requires DROP ANY SQL PATCH privilege

171.4.9 EXECUTE_DIAGNOSIS_TASK Procedure

This procedure executes a diagnostic task.

Syntax

DBMS_SQLDIAG.EXECUTE_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-18 EXECUTE_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.10 EXPLAIN_SQL_TESTCASE Function

This procedure explains a SQL test case.

Syntax

DBMS_SQLDIAG.EXPLAIN_SQL_TESTCASE (
    sqlTestCase        IN   CLOB)
  RETURN CLOB; 

Parameters

Table 171-19 EXPLAIN_SQL_TESTCASE Function Parameters

Parameter	Description
sqlTestCase	XML document describing the SQL test case

171.4.11 EXPORT_SQL_TESTCASE Procedures

This procedure exports a SQL test case to a directory.

Syntax

This variant has to be provided with the SQL information.

DBMS_SQLDIAG.EXPORT_SQL_TESTCASE (
    directory                IN              VARCHAR2,
    sql_text                 IN              CLOB,
    user_name                IN              VARCHAR2  :=  NULL,
    bind_list                IN              sql_binds :=  NULL,
    exportEnvironment        IN              BOOLEAN   :=  TRUE,
    exportMetadata           IN              BOOLEAN   :=  TRUE,
    exportData               IN              BOOLEAN   :=  FALSE,
    exportPkgbody            IN              BOOLEAN   :=  FALSE,
    samplingPercent          IN              NUMBER    :=  100,
    ctrlOptions              IN              VARCHAR2  :=  NULL,
    timeLimit                IN              NUMBER    :=  0,
    testcase_name            IN              VARCHAR2  :=  NULL,
    testcase                 IN OUT NOCOPY   CLOB,
    preserveSchemaMapping    IN              BOOLEAN   :=  FALSE,
    version                  IN              VARCHAR2  :=  'COMPATIBLE'); 

This variant extracts the SQL information from an incident file.

DBMS_SQLDIAG.EXPORT_SQL_TESTCASE (
    directory                IN              VARCHAR2,
    incident_id              IN              VARCHAR2,
    exportEnvironment        IN              BOOLEAN   :=  TRUE,
    exportMetadata           IN              BOOLEAN   :=  TRUE,
    exportData               IN              BOOLEAN   :=  FALSE,
    exportPkgbody            IN              BOOLEAN   :=  FALSE,
    samplingPercent          IN              NUMBER    :=  100,
    ctrlOptions              IN              VARCHAR2  :=  NULL,
    timeLimit                IN              NUMBER    :=  
                                                DBMS_SQLDIAG.TIME_LIMIT_DEFAULT,
    testcase_name            IN              VARCHAR2  :=  NULL,
    testcase                 IN OUT NOCOPY   CLOB,
    preserveSchemaMapping    IN              BOOLEAN   :=  FALSE)
    version                  IN              VARCHAR2  :=  'COMPATIBLE'); 

This variant allow the SQL Test case to be generated from a cursor present in the cursor cache. Use V$SQL to get the SQL identifier and the SQL hash value.

DBMS_SQLDIAG.EXPORT_SQL_TESTCASE (
    directory                IN              VARCHAR2,
    sql_id                   IN              VARCHAR2,
    plan_hash_value          IN              NUMBER    := NULL,
    exportEnvironment        IN              BOOLEAN   :=  TRUE,
    exportMetadata           IN              BOOLEAN   :=  TRUE,
    exportData               IN              BOOLEAN   :=  FALSE,
    exportPkgbody            IN              BOOLEAN   :=  FALSE,
    samplingPercent          IN              NUMBER    :=  100,
    ctrlOptions              IN              VARCHAR2  :=  NULL,
    timeLimit                IN              NUMBER    := 
                                                DBMS_SQLDIAG.TIME_LIMIT_DEFAULT,
    testcase_name            IN              VARCHAR2  :=  NULL,
    testcase                 IN OUT NOCOPY   CLOB,
    preserveSchemaMapping    IN              BOOLEAN   :=  FALSE)
    version                  IN              VARCHAR2  :=  'COMPATIBLE'); 

Parameters

Table 171-20 EXPORT_SQL_TESTCASE Procedure Parameters

Parameter	Description
directory	Directory to store the various generated files
sql_text	Text of the SQL statement to export
incident_id	Incident ID containing the offending SQL
sql_id	Identifier of the statement in the cursor cache
username	Name of the user schema to use to parse the SQL, defaults to SYS
bind_list	List of bind values associated to the statement
exportEnvironment	TRUE if the compilation environment should be exported
exportMetadata	TRUE if the definition of the objects referenced in the SQL should be exported
exportData	TRUE if the data of the objects referenced in the SQL should be exported
exportPkgbody	TRUE if the body of the packages referenced in the SQL are exported
samplingPercent	If is TRUE, specify the sampling percentage to use to create the dump file
ctrlOptions	Opaque control parameters. For example, to execute three times, set ctrlOptions with the following string: '<parameter name="mexec_count">3</parameter>'. name="capture” - BASIC (default) or WITH_RUNTIME_INFO. This parameter defines the mode of TCB capture. BASIC: runs as Oracle release 11g TCB and captures all the information that is captured in that release as well as AWR reports, SQL monitor reports and parameter information. WITH_RUNTIME_INFO: TCB captures runtime information for the SQL, such as dynamic sampling data, list of binds, Dynamic Plan info, along with information captured under BASIC mode. Note this must be the same value as used in the IMPORT_SQL_TESTCASE Procedures. name="mexec_count”–Value is any positive number (N). This parameter tells TCB to execute the statement for N time and capture runtime info at end of each execution. name="stat_history_since”–Value is date. The object statistics history is exported using this parameter. Statistics history after date specified will be exported. name="compress”–This option is used to compress the SQL Test Case Builder output files into a zip file. The possible values are: YES NO The default value is NO. name="diag_event"–This option is used to specify the level of trace information to include in the SQL Test Case Builder output. The possible values are: ADS COMPILER SQLEXEC_LOW SQLEXEC_MEDIUM SQLEXEC_HIGH SQLEXEC_HIGHEST The default value is ADS + COMPILER. name="problem_type"–This option is used to assign an issue type for a SQL Test Case Builder test case. For example, if a test case is related to performance regression issue, then you can assign the value of PERFORMANCE to the problem_type option. The possible values are : PERFORMANCE WRONG_RESULTS COMPILATION_ERROR EXECUTION_ERROR The default value is PERFORMANCE.
timeLimit	How much time should we spend exporting the SQL test case
testcaseName	An optional name for the SQL test case. This is used to prefix all the generated scripts
testcase	Resulting testcase
preserveSchemaMapping	TRUE if the schema (or schemas) are not re-mapped from the original environment to the test environment
version	Version of database objects to be extracted. This option is only valid for EXPORT. Database objects or attributes incompatible with the version will not be extracted. COMPATIBLE - (default) the version of the metadata corresponds to the database compatibility level and the compatibility release level for feature (as given in the V$COMPATIBILITY view). Database compatibility must be set to 9.2 or higher. LATEST - the version of the metadata that specifies the current database version. A specific database version. For example, if '10.0.0', this cannot be lower than Oracle Database release 10.0.0.

Usage Notes

• A SQL test case generates a set of files needed to help reproduce a SQL failure on a different machine. It contains:

  • a dump file containing schemas objects and statistics (.dmp)

  • the explain plan for the statements (in advanced mode)

  • diagnostic information gathered on the offending statement

  • an import script to execute to reload the objects

  • a SQL script to replay system statistics of the source

  • a table of contents file describing the SQL test case

  • metadata. (xxxxmain.xml)

  • a README.txt file that explain the usage of the TCB

  • the outlines used by the statement (ol.xml)

  • a list of parameters set in the exporting db/env (prmimp.sql)

  • a SQL monitor report, if any (smrpt.html)

  • an AWR report, if any (awrrpt.html)

  • a list of binds used in this statement (bndlst.xml)

• You should not run Test Case Builder (TCB) under user SYS. Instead, use another user who can be granted the DBA privilege.

• The default setting for TCB is that data is not exported. However, in some cases data is required, such as to diagnose an outcome with a result that is not optimal. To export data, call EXPORT_SQL_TESTCASE with exportData=>TRUE and the data will be imported by default, unless turned OFF by importData=>FALSE.

• TCB includes PL/SQL package spec by default, but not the PL/SQL package body. However, you may need to have the package body as well, for example, to invoke the PL/SQL functions, or because you have a Virtual Private Database (VPD) function defined in a package. To export a PL/SQL package body, call EXPORT_SQL_TESTCASE with exportPkgbody=>TRUE. To import a PL/SQL package body, call IMPORT_SQL_TESTCASE Procedures with importPkgbody=>TRUE.

• To export objects statistics history, the database compatibility should be set to 12.0 or higher.

• This procedure does not export data and statistics on a Global Temporary Table (GTT).

Examples

The user can specify multiple parameters in the ctrlOptions encapsulated either by using the <parameters> parent tag or without the parent tag.

Using the <parameters> tag

<parameters>
<parameter name="capture">with_runtime_info</parameter>
<parameter name="mexec_count">1</parameter>
</parameters>

Without the <parameters> tag

<parameter name="capture">with_runtime_info</parameter>
<parameter name="mexec_count">1</parameter>'

The compress option that you can specify in the ctrlOptions parameter:

  opt := '<parameters>
             <parameter name="capture">with_runtime_info</parameter>
             <parameter name="compress">yes</parameter>
         </parameters>';

The diag_event option that you can specify in the ctrlOptions parameter:

  opt := '<parameters>
             <parameter name="capture">with_runtime_info</parameter>
             <parameter name="compress">yes</parameter>
         </parameters>';

The problem_type option that you can specify in the ctrlOptions parameter:

  opt := '<parameters>
             <parameter name="capture">with_runtime_info</parameter>
             <parameter name="compress">yes</parameter>
         </parameters>';

171.4.12 EXPORT_SQL_TESTCASE_DIR_BY_INC Function

This function generates a SQL test case corresponding to the incident ID passed as an argument. It creates a set of scripts and dump file in the directory passed as an argument.

Syntax

DBMS_SQLDIAG.EXPORT_SQL_TESTCASE_DIR_BY_INC (
    incident_id        IN   NUMBER,
    directory          IN   VARCHAR2,
    exportEnvironment  IN   VARCHAR2 := 'TRUE',
    exportMetadata     IN   VARCHAR2 := 'TRUE',
    exportData         IN   VARCHAR2 := 'FALSE',
    samplingPercent    IN   VARCHAR2 := '100', 
    ctrlOptions        IN   VARCHAR2 := NULL
    version            IN   VARCHAR2 := 'COMPATIBLE')
 RETURN BOOLEAN;

Parameters

Table 171-21 EXPORT_SQL_TESTCASE_DIR_BY_INC Function Parameters

Parameter	Description
incident_id	Incident ID containing the offending SQL. For more information about Incidents, see Oracle Database Performance Tuning Guide.
directory	Directory path to the generated files
exportEnvironment	TRUE if the compilation environment should be exported
exportMetadata	TRUE if the definition of the objects referenced in the SQL should be exported
exportData	TRUE if the data of the objects referenced in the SQL should be exported
samplingPercent	If is TRUE, specify the sampling percentage to use to create the dump file
ctrlOptions	Opaque control parameters. For example, to execute three times, set ctrlOptions with the following string: '<parameter name="mexec_count">3</parameter>'. capture - BASIC (default) or WITH_RUNTIME_INFO. This parameter defines the mode of TCB capture. BASIC: runs as Oracle release 11g TCB and captures all the information that is captured in that release as well as AWR reports, SQL monitor reports and parameter information. WITH_RUNTIME_INFO: TCB captures runtime information for the SQL, such as dynamic sampling data, list of binds, Dynamic Plan info, along with information captured under BASIC mode. name=mexec_count - Value is any positive number (N). This parameter tells TCB to execute the statement for N time and capture runtime info at end of each execution. name=stat_history_since - Value is date. The object statistics history is exported using this parameter. Statistics history after date specified will be exported.
version	Version of database objects to be extracted. This option is only valid for EXPORT. Database objects or attributes incompatible with the version will not be extracted. COMPATIBLE - (default) the version of the metadata corresponds to the database compatibility level and the compatibility release level for feature (as given in the V$COMPATIBILITY view). Database compatibility must be set to 9.2 or higher. LATEST - the version of the metadata that specifies the current database version. A specific database version. For example, if '10.0.0', this cannot be lower than Oracle Database release 10.0.0.

171.4.13 EXPORT_SQL_TESTCASE_DIR_BY_TXT Function

This function generates a SQL Test Case corresponding to the SQL passed as an argument. It creates a set of scripts and dump files in the directory passed as an argument.

Syntax

DBMS_SQLDIAG.EXPORT_SQL_TESTCASE_DIR_BY_TXT (
    incident_id        IN   NUMBER,
    directory          IN   VARCHAR2,
    sql_text           IN   CLOB,
    user_name          IN   VARCHAR2 := 'SYS',
    exportEnvironment  IN   VARCHAR2 := 'TRUE',
    exportMetadata     IN   VARCHAR2 := 'TRUE',
    exportData         IN   VARCHAR2 := 'FALSE',
    samplingPercent    IN   VARCHAR2 := '100', 
    ctrlOptions        IN   VARCHAR2 := NULL
    version            IN   VARCHAR2 := 'COMPATIBLE')
  RETURN BOOLEAN;

Parameters

Table 171-22 EXPORT_SQL_TESTCASE_DIR_BY_TXT Function Parameters

Parameter	Description
incident_id	Incident ID containing the offending SQL
directory	Directory to store the various generated files
sql_text	Text of the SQL statement to explain
username	Name of the user schema to use to parse the SQL, defaults to SYS
exportEnvironment	TRUE if the compilation environment should be exported
exportMetadata	TRUE if the definition of the objects referenced in the SQL should be exported
exportData	TRUE if the data of the objects referenced in the SQL should be exported
samplingPercent	If is TRUE, specify the sampling percentage to use to create the dump file
ctrlOptions	Opaque control parameters. For example, to execute three times, set ctrlOptions with the following string: '<parameter name="mexec_count">3</parameter>'. capture - BASIC (default) or WITH_RUNTIME_INFO. This parameter defines the mode of TCB capture. BASIC: runs as Oracle Release 11g TCB and captures all the information that is captured in that release as well as AWR reports, SQL monitor reports and parameter information. WITH_RUNTIME_INFO: TCB captures runtime information for the SQL, such as dynamic sampling data, list of binds, Dynamic Plan info, along with information captured under BASIC mode. name=mexec_count - Value is any positive number (N). This parameter tells TCB to execute the statement for N time and capture runtime info at end of each execution. name=stat_history_since - Value is date. The object statistics history is exported using this parameter. Statistics history after date specified will be exported.
version	Version of database objects to be extracted. This option is only valid for EXPORT. Database objects or attributes incompatible with the version will not be extracted. COMPATIBLE - (default) the version of the metadata corresponds to the database compatibility level and the compatibility release level for feature (as given in the V$COMPATIBILITY view). Database compatibility must be set to 9.2 or higher. LATEST - the version of the metadata that specifies the current database version. A specific database version. For example, if '10.0.0', this cannot be lower than Oracle Database Release 10.0.0.

171.4.14 GET_FIX_CONTROL Function

This function returns the value of fix control for a given bug number.

Syntax

DBMS_SQLDIAG.GET_FIX_CONTROL (
    bug_number   IN    NUMBER)
  RETURN NUMBER;

Parameters

Table 171-23 GET_FIX_CONTROL Function Parameters

Parameter	Description
bug_number	Bug number

171.4.15 GET_SQL Function

This function loads a sql_setrow from the trace file associated to an the given incident ID.

Syntax

DBMS_SQLDIAG.GET_SQL (
    incident_id  IN     VARCHAR2)
  RETURN SQLSET_ROW;

Parameters

Table 171-24 GET_SQL Function Parameters

Parameter	Description
incident_id	Identifier of the incident

171.4.16 IMPORT_SQL_TESTCASE Procedures

This procedure imports a SQL test case into a schema.

Syntax

This variant requires a source directory and SQL Testcase metadata object (in XML format).

DBMS_SQLDIAG.IMPORT_SQL_TESTCASE (
    directory                IN   VARCHAR2,
    sqlTestCase              IN   CLOB,
    importEnvironment        IN   BOOLEAN   :=  TRUE,
    importMetadata           IN   BOOLEAN   :=  TRUE,
    importData               IN   BOOLEAN   :=  TRUE,
    importPkgbody            IN   BOOLEAN   :=  FALSE,
    importDiagnosis          IN   BOOLEAN   :=  TRUE,
    ignoreStorage            IN   BOOLEAN   :=  TRUE,
    ctrlOptions              IN   VARCHAR2  :=  NULL,
    preserveSchemaMapping    IN   BOOLEAN   :=  FALSE);

This variant requires a source directory name of SQL Testcase metadata file.

DBMS_SQLDIAG.IMPORT_SQL_TESTCASE (
    directory                IN   VARCHAR2,
    filename                 IN   VARCHAR2,
    importEnvironment        IN   BOOLEAN   :=  TRUE,
    importMetadata           IN   BOOLEAN   :=  TRUE,
    importData               IN   BOOLEAN   :=  TRUE,
    importPkgbody            IN   BOOLEAN   :=  FALSE,
    importDiagnosis          IN   BOOLEAN   :=  TRUE,
    ignoreStorage            IN   BOOLEAN   :=  TRUE,
    ctrlOptions              IN   VARCHAR2  :=  NULL,
    preserveSchemaMapping    IN   BOOLEAN   :=  FALSE);

Parameters

Table 171-25 IMPORT_SQL_TESTCASE Procedure Parameters

Parameter	Description
directory	Directory containing test case files
filename	Name of a file containing an XML document describing the SQL test case
importEnvironment	TRUE if the compilation environment should be imported
importMetadata	TRUE if the definition of the objects referenced in the SQL should be imported
importData	TRUE if the data of the objects referenced in the SQL should be imported
importPkgbody	TRUE if the body of the packages referenced in the SQL are imported
importDiagnosis	TRUE if the diagnostic information associated to the task should be imported
ignoreStorage	TRUE if the storage attributes should be ignored
ctrlOptions	Opaque control parameters, of which only capture is valid for this subprogam. capture - BASIC (default) or WITH_RUNTIME_INFO. This parameter defines the mode of TCB capture. BASIC: runs as Oracle Release 11g TCB and captures all the information that is captured in that release as well as AWR reports, SQL monitor reports and parameter information. WITH_RUNTIME_INFO: TCB captures runtime information for the SQL, such as dynamic sampling data, list of binds, Dynamic Plan info, along with information captured under BASIC mode.
preserveSchemaMapping	TRUE if the schema (or schemas) are not re-mapped from the original environment to the test environment (schema mapping in the target database will be identical to the source database). Note that when an import is run with preservesSchemaMapping set to TRUE, if the objects in the schemas exists then the import will overwrite the existing objects.

Usage Notes

• A SQL test case generates a set of files needed to help reproduce a SQL failure on a different machine. It contains:

  • a dump file containing schemas objects and statistics (.dmp)

  • the explain plan for the statements (in advanced mode)

  • diagnostic information gathered on the offending statement

  • an import script to execute to reload the objects

  • a SQL script to replay system statistics of the source

  • a table of contents file describing the SQL test case

  • metadata. (xxxxmain.xml)

  • a README.txt file that explain the usage of the TCB

  • the outlines used by the statement (ol.xml)

  • a list of parameters set in the exporting db/env (prmimp.sql)

  • a SQL monitor report, if any (smrpt.html)

  • an AWR report, if any (awrrpt.html)

  • a list of binds used in this statement (bndlst.xml)

• You should not run Test Case Builder (TCB) under user SYS. Instead, use another user who can be granted the DBA privilege

• The default setting for TCB is that data is not exported. However, in some cases data is required, such as to diagnose an outcome with a result that is not optimal. To export data, call EXPORT_SQL_TESTCASE Procedures with exportData=>TRUE and the data will be imported by default, unless turned OFF by importData=>FALSE.

• TCB includes PL/SQL package spec by default, but not the PL/SQL package body. However, you may need to have the package body as well, for example, to invoke the PL/SQL functions, or because you have a Virtual Private Database (VPD) function defined in a package. To export a PL/SQL package body, call EXPORT_SQL_TESTCASE Procedures with exportPkgbody=>TRUE. To import a PL/SQL package body, call IMPORT_SQL_TESTCASE Procedures with importPkgbody=>TRUE.

• The capture value used when invoking the EXPORT_SQL_TESTCASE Procedures must be used when calling this procedure.

171.4.17 INCIDENTID_2_SQL Procedure

This procedure initializes a sql_setrow from an incident ID.

Syntax

DBMS_SQLDIAG.INCIDENTID_2_SQL (
    incident_id   IN     VARCHAR2,
    sql_stmt      OUT    SQLSET_ROW,
    problem_type  OUT    NUMBER, 
    err_code      OUT    BINARY_INTEGER,
    err_mesg      OUT    VARCHAR2);

Parameters

Table 171-26 INCIDENTID_2_SQL Procedure Parameters

Parameter	Description
incident_id	Identifier of the incident
sql_stmt	Resulting SQL
problem_type	Tentative type of SQL problem (currently among PROBLEM_TYPE_COMPILATION_ERROR and PROBLEM_TYPE_EXECUTION_ERROR)
err_code	Error code if any otherwise it is set to NULL
err_msg	Error message if any otherwise it is set to NULL

171.4.18 INTERRUPT_DIAGNOSIS_TASK Procedure

This procedure interrupts a diagnostic task.

Syntax

DBMS_SQLDIAG.INTERRUPT_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-27 INTERRUPT_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.19 LOAD_SQLSET_FROM_TCB Function

This function loads a SQLSET from a Test Case Builder file.

Syntax

DBMS_SQLDIAG.LOAD_SQLSET_FROM_TCB (
    directory        IN     VARCHAR2,
    filename         IN     VARCHAR2,
    sqlset_name      IN     VARCHAR2 DEFAULT NULL)
  RETURN VARCHAR2;

Parameters

Table 171-28 LOAD_SQLSET_FROM_TCB Function Parameters

Parameter	Description
directory	Name of directory
filename	Name of file
sqlset_name	Name of SQLSET

171.4.20 PACK_STGTAB_SQLPATCH Procedure

This procedure packs SQL patches into the staging table created by a call to the CREATE_STGTAB_SQLPATCH Procedure.

Syntax

DBMS_SQLDIAG.PACK_STGTAB_SQLPATCH (
   patch_name            IN  VARCHAR2 := '%',
   patch_category        IN  VARCHAR2 := 'DEFAULT',
   staging_table_name    IN  VARCHAR2,
   staging_schema_owner  IN  VARCHAR2 := NULL);

Parameters

Table 171-29 PACK_STGTAB_SQLPATCH Procedure Parameters

Parameter	Description
patch_name	Name of patch to pack (% wildcards acceptable, case-sensitive)
patch_category	Category to which to pack patches (% wildcards acceptable, case-insensitive)
staging_table_name	(Mandatory) Name of the table to use (case-sensitive)
staging_schema_owner	Schema where the table resides, or NULL for current schema (case-sensitive)

Usage Notes

• Requires: ADMINISTER SQL PLAN MANAGEMENT OBJECT privilege and INSERT privilege on the staging table

• By default, we move all SQL patches in category DEFAULT. Note that the subprogram issues a COMMIT after packing each SQL patch, so if an error is raised in mid-execution, some patches may be in the staging table.

171.4.21 REPLAY_SQL_TESTCASE Function

This function automates the reproduction of the SQL Test Case.

Syntax

DBMS_SQLDIAG.REPLAY_SQL_TESTCASE (
   directory       IN   VARCHAR2,
   filename        IN   VARCHAR2,
   ctrlOptions     IN   VARCHAR2  := NULL,
   format          IN   VARCHAR2  := 'TEXT')
   RETURN CLOB;

DBMS_SQLDIAG.REPLAY_SQL_TESTCASE (
   directory       IN   VARCHAR2,
   sqlTestCase     IN   CLOB,
   ctrlOptions     IN   VARCHAR2  := NULL,
   format          IN   VARCHAR2  := 'TEXT')
   RETURN CLOB;

Parameters

Table 171-30 REPLAY_SQL_TESTCASE Function Parameters

Parameter	Description
directory	Directory containing test case files
filename	Name of a file containing an XML document describing the SQL test case
ctrlOptions	Opaque control parameters. For example, to execute three times, set ctrlOptions with the following string: '<parameter name="mexec_count">3</parameter>'. replay - EXPLAIN (default), OUTLINE, EXECUTION or OUTLINE EXECUTION. This parameter defines TCB replay functionality. EXPLAIN: Replay explains the statement without using outlines OUTLINE: Replay uses outlines mode and explains the statement using outlines EXECUTION: Replay executes the statement without using outlines OUTLINE EXECUTION: Replay executes the statement using outlines Note that if the user gives an incorrect parameter value, then the replay runs in default mode and no error is thrown. name=mexec_count - Value is any positive number (N). This parameter tells TCB to execute the statement for N time and capture runtime info at end of each execution.
sqlTestCase	SQL test case
format	Format of the replay report. Possible formats are: TEXT, XML and HTML..

Examples

TCB Replay Mode: Execute
 SELECT /* tcbdynpl_1 */ /*+ gather_plan_statistics */ * FROM (SELECT * FROM emp where emp.sal > 100) emp, dept WHERE emp.deptno = dept.deptno And emp.sal > 1000 /* tcbdynpl_1 */
 
Explain Plan
 Plan Hash Value  : 2219294842
 
-----------------------------------------------------------------
| Id  | Operation                       | Name           | Rows |
-----------------------------------------------------------------
|   0 | SELECT STATEMENT                |                |   13 |
| * 1 |   HASH JOIN                     |                |   13 |
|   2 |    NESTED LOOPS                 |                |      |
|   3 |     NESTED LOOPS                |                |   13 |
|   4 |      STATISTICS COLLECTOR       |                |      |
|   5 |       TABLE ACCESS FULL         | DEPT           |    4 |
| * 6 |      INDEX RANGE SCAN           | EMP_IDX_DEPTNO |      |
| * 7 |     TABLE ACCESS BY INDEX ROWID | EMP            |    3 |
| * 8 |    TABLE ACCESS FULL            | EMP            |   13 |
-----------------------------------------------------------------
 
Predicate Information (identified by operation id):
------------------------------------------
* 1 - access("EMP"."DEPTNO"="DEPT"."DEPTNO")
* 6 - access("EMP"."DEPTNO"="DEPT"."DEPTNO")
* 7 - filter("EMP"."SAL">1000)
* 8 - filter("EMP"."SAL">1000)

Runtime Plan
 Plan Hash Value  : 2219294842
 
-------------------------------------------------------
| Id  | Operation            | Name | E-Card | A-Card |
-------------------------------------------------------
|   0 | SELECT STATEMENT     |      |        |      0 |
| * 1 |   HASH JOIN          |      |     13 |      0 |
|   2 |    TABLE ACCESS FULL | DEPT |      4 |      0 |
| * 3 |    TABLE ACCESS FULL | EMP  |     13 |      0 |
-------------------------------------------------------
 
Predicate Information (identified by operation id):
------------------------------------------
* 1 - access("EMP"."DEPTNO"="DEPT"."DEPTNO")
* 3 - filter("EMP"."SAL">1000)
 
REPLAY Note:
-----------
- Replay used dynamic sampling
- Replay forced Dynamic plan

171.4.22 REPORT_DIAGNOSIS_TASK Function

This function reports on a diagnostic task. It returns a CLOB containing the desired report.

Syntax

DBMS_SQLDIAG.REPORT_DIAGNOSIS_TASK (
    taskname           IN   VARCHAR2,
    type               IN   VARCHAR2  := TYPE_TEXT,
    level              IN   VARCHAR2  := LEVEL_TYPICAL,
    section            IN   VARCHAR2  := SECTION_ALL,
    object_id          IN   NUMBER    := NULL,
    result_limit       IN   NUMBER    := NULL,
    owner_name         IN   VARCHAR2  := NULL)
  RETURN CLOB;

Parameters

Table 171-31 REPORT_DIAGNOSIS_TASK Function Parameters

Parameter	Description
taskname	Name of task to report
type	Type of the report. Possible values are: TEXT, HTML, XML (see Table 171-4).
level	Format of the recommendations. Possible values are TYPICAL, BASIC, ALL (Table 171-5).
section	Particular section in the report. Possible values are: SUMMARY, FINDINGS, PLAN, INFORMATION, ERROR, ALL (Table 171-6).
object_id	Identifier of the advisor framework object that represents a given statement in a SQL Tuning Set (STS).
result_limit	Number of statements in a STS for which the report is generated
owner_name	Name of the task execution to use. If NULL, the report will be generated for the last task execution.

171.4.23 RESET_DIAGNOSIS_TASK Procedure

This procedure resets a diagnostic task.

Syntax

DBMS_SQLDIAG.RESET_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-32 RESET_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.24 RESUME_DIAGNOSIS_TASK Procedure

This procedure resumes a diagnostic path.

Syntax

DBMS_SQLDIAG.RESUME_DIAGNOSIS_TASK (
    taskname        IN   VARCHAR2); 

Parameters

Table 171-33 RESUME_DIAGNOSIS_TASK Procedure Parameters

Parameter	Description
taskname	Name of task

171.4.25 SET_DIAGNOSIS_TASK_PARAMETER Procedure

This procedure is called to update the value of a SQL diagnosis parameter of type VARCHAR2.

The task must be set to its initial state before calling this procedure. The diagnosis parameters that can be set by this procedure are:

• MODE: diag scope (comprehensive, limited)

• _SQLDIAG_FINDING_MODE: findings in the report (see "Table 171-8" for possible values)

Syntax

DBMS_SQLDIAG.SET_DIAGNOSIS_TASK_PARAMETER (
    taskname           IN   VARCHAR2,
    parameter          IN   VARCHAR2,    value              IN   NUMBER);

Parameters

Table 171-34 SET_DIAGNOSIS_TASK_PARAMETER Procedure Parameters

Parameter	Description
taskname	Identifier of the task to execute
parameter	Name of the parameter to set
value	New value of the specified parameter

171.4.26 SQL_DIAGNOSE_AND_REPAIR Function

Diagnoses a given SQL statement for a given SQL ID for the given problem type. This function creates an incident, populate incident metadata with required information like, SQL ID, SQL text, compilation environment, and so on. It also creates a diagnostic task, executes it and accepts SQL PATCH recommendation for a given SQL ID.

Syntax

DBMS_SQLDIAG.SQL_DIAGNOSE_AND_REPAIR (
    sql_text           IN   CLOB,
    bind_list          IN   sql_binds := NULL,
    scope              IN   VARCHAR2  := SCOPE_COMPREHENSIVE,
    time_limit         IN   NUMBER    := TIME_LIMIT_DEFAULT,
    problem_type       IN   NUMBER    := PROBLEM_TYPE_PERFORMANCE,
    auto_apply_patch   IN   VARCHAR2  := YES)
  RETURN NUMBER;


DBMS_SQLDIAG.SQL_DIAGNOSE_AND_REPAIR (
    sql_id             IN   VARCHAR2,
    plan_hash_value    IN   NUMBER   := NULL,
    scope              IN   VARCHAR2 := SCOPE_COMPREHENSIVE,
    time_limit         IN   NUMBER   := TIME_LIMIT_DEFAULT,
    problem_type       IN   NUMBER   := PROBLEM_TYPE_PERFORMANCE,
    auto_apply_patch   IN   VARCHAR2 := YES)
  RETURN NUMBER;

DBMS_SQLDIAG.SQL_DIAGNOSE_AND_REPAIR (
    incident_id        IN   VARCHAR2,
    scope              IN   VARCHAR2 := SCOPE_COMPREHENSIVE,
    time_limit         IN   NUMBER   := TIME_LIMIT_DEFAULT,
    problem_type       IN   NUMBER   := PROBLEM_TYPE_PERFORMANCE,
    auto_apply_patch   IN   VARCHAR2 := YES)
  RETURN NUMBER;

Parameters

Table 171-35 SQL_DIAGNOSE_AND_REPAIR Function Parameters

Parameter	Description
sql_text	Text of the SQL statement.
sql_id	SQL ID of the SQL query.
plan_hash_value	The plan to be used for diagnosis. The default value is NULL.
bind_list	Binds to be used for diagnosis. The default value is NULL.
scope	The scope of diagnostic advisor. Possible values are: SCOPE_LIMITED—only index and plan analyze are invoked for a given SQL. SCOPE_COMPREHENSIVE—besides index and plan analyze, auto-tune is called first to tune the statement. The default value is SCOPE_COMPREHENSIVE.
time_limit	Time limit for diagnostic task. The default value is TIME_LIMIT_DEFAULT.
problem_type	Problem type that is being diagnosed. The following problem type are supported: PROBLEM_TYPE_PERFORMANCE—performance problem. PROBLEM_TYPE_WRONG_RESULTS— incorrect results. PROBLEM_TYPE_COMPILATION_ERROR—crash during compilation of the statement. PROBLEM_TYPE_EXECUTION_ERROR— crash during execution of the statement. The default value is PROBLEM_TYPE_PERFORMANCE.
auto_apply_patch	A value that decides if the recommended SQL patch needs to be accepted. Possible values are: YES—accepts the recommended SQL patch. NO—does not accepts recommended SQL patch automatically. User need to manually accept the SQL patch. The default value is YES.

171.4.27 UNPACK_STGTAB_SQLPATCH Procedure

This procedure unpacks from the staging table populated by a call to the PACK_STGTAB_SQLPATCH Procedure. It uses the patch data stored in the staging table to create patches on this system. Users can opt to replace existing patches with patch data when they exist already. In this case, note that it is only possible to replace patches referring to the same statement if the names are the same (see the ACCEPT_SQL_PATCH Function & Procedure).

Syntax

DBMS_SQLDIAG.UPPACK_STGTAB_SQLPATCH (
   patch_name            IN  VARCHAR2 := '%',
   patch_category        IN  VARCHAR2 := '%',
   replace               IN  BOOLEAN,
   staging_table_name    IN  VARCHAR2,
   staging_schema_owner  IN  VARCHAR2 := NULL);

Parameters

Table 171-36 UPPACK_STGTAB_SQLPATCH Procedure Parameters

Parameter	Description
patch_name	Name of patch to unpack (% wildcards acceptable, case-sensitive)
patch_category	Category from which to unpack patches (% wildcards acceptable, case-insensitive)
replace	Replace patches if they already exist. Note that patches cannot be replaced if there is one in the staging table with the same name as an active patch on different SQL. The subprogram raises an error if there an attempt to create a patch that already exists.
staging_table_name	(Mandatory) Name of the table to use (case-sensitive)
staging_schema_owner	Schema where the table resides, or NULL for current schema (case-sensitive)

Usage Notes

• Requires: ADMINISTER SQL MANAGEMENT OBJECT privilege and SELECT or READ privilege on the staging table

• By default, all SQL patches in the staging table are moved. The function commits after successfully loading each patch. If it fails in creating an individual patch, it raises an error and does not proceed to those remaining in the staging table.