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Database Administrator's Guide, 11g Release 1 (11.1)

Database Data Dictionary Views

Database Data Dictionary ViewsIn addition to the views listed previously in \"Viewing Parameter Settings\", you can view information about your database content and structure using the following views: View Description DATABASE_PROPERTIES Displays permanent database properties GLOBAL_NAME Displays the global database name V$DATABASE Contains database information from the control file

Database Administrator's Guide, 11g Release 1 (11.1)

Tables Data Dictionary Views

Tables Data Dictionary ViewsALL_EXTERNAL_LOCATIONS USER_EXTERNAL_LOCATIONS These views list the data sources for external tables … , such as name, datatype, length, precision, scale, and default data values can be listed using one

Database Administrator's Guide, 11g Release 1 (11.1)

Scheduler Reference

Scheduler Data Dictionary ViewsYou can check Scheduler information by using many views. An example is the following, which shows information for completed instances of my_job1: SELECT JOB_NAME, STATUS, ERROR# FROM DBA_SCHEDULER_JOB_RUN_DETAILS WHERE JOB_NAME = 'MY_JOB1'; JOB_NAME STATUS ERROR# -------- -------------- ------ MY_JOB1 FAILURE 20000 Table 28-3 contains views associated with the Scheduler. The *_SCHEDULER_JOBS, *_SCHEDULER_SCHEDULES,

Database Administrator's Guide, 11g Release 1 (11.1)

Datafiles Data Dictionary Views

Datafiles Data Dictionary ViewsThe following data dictionary views provide useful information about the datafiles of a database

Database Administrator's Guide, 11g Release 1 (11.1)

Tablespace Data Dictionary Views

Tablespace Data Dictionary ViewsThe following data dictionary and dynamic performance views provide useful information about the … , USER_EXTENTS Information about data extents within all (or user accessible) tablespaces. DBA_FREE_SPACE

Database Administrator's Guide, 11g Release 1 (11.1)

Indexes Data Dictionary Views

Indexes Data Dictionary ViewsThe following views display information about indexes: View Description DBA_INDEXES ALL_INDEXES USER_INDEXES DBA view describes indexes on all tables in the database. ALL view describes indexes on all tables accessible to the user. USER view is restricted to indexes owned by the user. Some columns in these views contain statistics that are generated by the DBMS_STATS package or ANALYZE statement.

Database Administrator's Guide, 11g Release 1 (11.1)

Clusters Data Dictionary Views

Clusters Data Dictionary ViewsThe following views display information about clusters: View Description DBA_CLUSTERS ALL_CLUSTERS USER_CLUSTERS DBA view describes all clusters in the database. ALL view describes all clusters accessible to the user. USER view is restricted to clusters owned by the user. Some columns in these views contain statistics that are generated by the DBMS_STATS package or ANALYZE statement. DBA_CLU_COLUMNS

Database Administrator's Guide, 11g Release 1 (11.1)

Monitoring Performance

Performance Monitoring Data Dictionary ViewsThis section lists some of the data dictionary views that you can use to monitor an Oracle Database

Database Administrator's Guide, 11g Release 1 (11.1)

Control Files Data Dictionary Views

Control Files Data Dictionary ViewsThe following views display information about control files: View Description V$DATABASE Displays database information from the control file V$CONTROLFILE Lists the names of control files V$CONTROLFILE_RECORD_SECTION Displays information about control file record sections V$PARAMETER Displays the names of control files as specified in the CONTROL_FILES initialization parameter This example lists the

Database Administrator's Guide, 11g Release 1 (11.1)

Redo Log Data Dictionary Views

Redo Log Data Dictionary ViewsThe following views provide information on redo logs. View Description V$LOG Displays the redo log file information from the control file V$LOGFILE Identifies redo log groups and members and member status V$LOG_HISTORY Contains log history information The following query returns the control file information about the redo log for a database. SELECT * FROM V$LOG; GROUP# THREAD# SEQ BYTES MEMBERS ARC

Database Administrator's Guide, 11g Release 1 (11.1)

Undo Space Data Dictionary Views

Undo Space Data Dictionary Views\"Datafiles Data Dictionary Views\" for information on getting information about those views. The … to the time interval marked by ( BEGIN_TIME, END_TIME ). Each column represents the data collected

Database Administrator's Guide, 11g Release 1 (11.1)

Memory Management Reference

Memory Management Data Dictionary ViewsThe following dynamic performance views provide information on memory management: View Description V$SGA Displays summary information about the system global area (SGA). V$SGAINFO Displays size information about the SGA, including the sizes of different SGA components, the granule size, and free memory. V$SGASTAT Displays detailed information about how memory is allocated within the shared pool, large

Database Administrator's Guide, 11g Release 1 (11.1)

Oracle Database Resource Manager Reference

Resource Manager Data Dictionary ViewsData Dictionary Views View Description DBA_RSRC_CONSUMER_GROUP_PRIVS USER_RSRC_CONSUMER_GROUP_PRIVS

Database Administrator's Guide, 11g Release 1 (11.1)

Displaying Information About Schema Objects

Schema Objects Data Dictionary Viewscomplete description of data dictionary views The following are examples of using some of these views

Database Administrator's Guide, 11g Release 1 (11.1)

Hash Clusters Data Dictionary Views

Hash Clusters Data Dictionary ViewsThe following views display information about hash clusters: View Description DBA_CLUSTERS ALL_CLUSTERS USER_CLUSTER S DBA view describes all clusters (including hash clusters) in the database. ALL view describes all clusters accessible to the user. USER view is restricted to clusters owned by the user. Some columns in these views contain statistics that are generated by the DBMS_STATS package or

Database Administrator's Guide, 11g Release 1 (11.1)

Configuring Oracle Database for Shared Server

Shared Server Data Dictionary ViewsThe following views are useful for obtaining information about your shared server configuration and for monitoring performance. View Description V$DISPATCHER Provides information on the dispatcher processes, including name, network address, status, various usage statistics, and index number. V$DISPATCHER_CONFIG Provides configuration information about the dispatchers. V$DISPATCHER_RATE Provides rate

Database Administrator's Guide, 11g Release 1 (11.1)

Process and Session Data Dictionary Views

Process and Session Data Dictionary ViewsThe following are the data dictionary views that can help you manage processes and sessions. View

Database Administrator's Guide, 11g Release 1 (11.1)

Purging Pending Rows from the Data Dictionary

Purging Pending Rows from the Data DictionaryBefore RECO recovers an in-doubt transaction, the transaction appears in DBA_2PC_PENDING.STATE as COLLECTING, COMMITTED, or PREPARED. If you force an in-doubt transaction using COMMIT FORCE or ROLLBACK FORCE, then the states FORCED COMMIT or FORCED ROLLBACK may appear. Automatic recovery normally deletes entries in these states. The only exception is when recovery discovers a forced transaction that

Database Administrator's Guide, 11g Release 1 (11.1)

Views, Synonyms, and Sequences Data Dictionary Views

Views, Synonyms, and Sequences Data Dictionary ViewsThe following views display information about views, synonyms, and sequences: View Description DBA_VIEWS ALL_VIEWS USER_VIEWS DBA view describes all views in the database. ALL view is restricted to views accessible to the current user. USER view is restricted to views owned by the current user. DBA_SYNONYMS ALL_SYNONYMS USER_SYNONYMS These views describe synonyms. DBA_SEQUENCES ALL_SEQUENCES USER_SEQUENCES

Database Administrator's Guide, 11g Release 1 (11.1)

Displaying Information About Space Usage for Schema Objects

Schema Objects Space Usage Data Dictionary Viewscontain examples of using some of these views. See Also: Oracle Database Reference for a complete description of data dictionary views

Database Administrator's Guide, 11g Release 1 (11.1)

Monitoring Errors and Alerts

Server-Generated Alerts Data Dictionary ViewsThe following data dictionary views provide information about server-generated alerts. View … : Oracle Database Reference for information on static data dictionary views and dynamic performance views

Database Administrator's Guide, 11g Release 1 (11.1)

Manually Committing an In-Doubt Transaction: Example

Step 4: Querying Data Dictionary Views on All NodesAt this point, you can contact the administrator at the located nodes and ask each person to repeat Steps 2 and 3 using the global transaction ID. Note: If you can directly connect to these nodes with another network, you can repeat Steps 2 and 3 yourself. For example, the following results are returned when Steps 2 and 3 are performed at sales and hq.

Database Administrator's Guide, 11g Release 1 (11.1)

Configuring Database Resident Connection Pooling

Data Dictionary Views for Database Resident Connection PoolingTable 4-3 lists the data dictionary views that provide information about database resident … performance of database resident connection pooling. Table 4-3 Data Dictionary Views for Database

Database Administrator's Guide, 11g Release 1 (11.1)

Creating a Database with the CREATE DATABASE Statement

Step 11: Run Scripts to Build Data Dictionary ViewsRun the scripts necessary to build data dictionary views, synonyms, and PL/SQL packages, and to … data dictionary tables, the dynamic performance views, and public synonyms for many of the views

Database Administrator's Guide, 11g Release 1 (11.1)

Tablespace Data Dictionary Views

Example 3: Displaying Statistics for Free Space (Extents) of Each TablespaceTo produce statistics about free extents and coalescing activity for each tablespace in the database, enter the following query: SELECT TABLESPACE_NAME \"TABLESPACE\", FILE_ID, COUNT(*) \"PIECES\", MAX(blocks) \"MAXIMUM\", MIN(blocks) \"MINIMUM\", AVG(blocks) \"AVERAGE\", SUM(blocks) \"TOTAL\" FROM DBA_FREE_SPACE GROUP BY TABLESPACE_NAME, FILE_ID; TABLESPACE FILE_ID PIECES MAXIMUM MINIMUM AVERAGE

Database Administrator's Guide, 11g Release 1 (11.1)

Tablespace Data Dictionary Views

Example 2: Listing the Datafiles and Associated Tablespaces of a DatabaseTo list the names, sizes, and associated tablespaces of a database, enter the following query on the DBA_DATA_FILES view: SELECT FILE_NAME, BLOCKS, TABLESPACE_NAME FROM DBA_DATA_FILES; FILE_NAME BLOCKS TABLESPACE_NAME ------------ ---------- ------------------- /U02/ORACLE/IDDB3/DBF/RBS01.DBF 1536 RBS /U02/ORACLE/IDDB3/DBF/SYSTEM01.DBF 6586 SYSTEM /U02/ORACLE/IDDB3/DBF/TEMP01.DBF 6400 TEMP /U02/ORACLE/IDDB3/DBF/TESTTBS01.DBF

Database Administrator's Guide, 11g Release 1 (11.1)

Tablespace Data Dictionary Views

Example 1: Listing Tablespaces and Default Storage ParametersTo list the names and default storage parameters of all tablespaces in a database, use the following query on the DBA_TABLESPACES view: SELECT TABLESPACE_NAME \"TABLESPACE\", INITIAL_EXTENT \"INITIAL_EXT\", NEXT_EXTENT \"NEXT_EXT\", MIN_EXTENTS \"MIN_EXT\", MAX_EXTENTS \"MAX_EXT\", PCT_INCREASE FROM DBA_TABLESPACES; TABLESPACE INITIAL_EXT NEXT_EXT MIN_EXT MAX_EXT PCT_INCREASE ---------- -----------

Database Reference, 11g Release 1 (11.1)

Static Data Dictionary Views

Static Data Dictionary ViewsPart II Static Data Dictionary Views This part describes data dictionary tables and views. These … contains the following chapters: Chapter 2, \"Static Data Dictionary Views: ALL_ALL_TABLES to … ALL_OUTLINES\" Chapter 3, \"Static Data Dictionary Views:

Database Concepts, 11g Release 1 (11.1)

The Data Dictionary

7 The Data Dictionarydatabase, known collectively as the data dictionary. This chapter contains the following topics … : Introduction to the Data Dictionary How the Data Dictionary Is Used Dynamic Performance Tables Database Object Metadata

Database Reference, 11g Release 1 (11.1)

Creating the Data Dictionary

Creating the Data Dictionarycreates the data dictionary. Thereafter, whenever the database is in operation, Oracle updates the datadictionary in response to every DDL statement. The data dictionary base tables are the first objects … data dictionary base tables store information

Database Concepts, 11g Release 1 (11.1)

The Data Dictionary

Introduction to the Data DictionaryOne of the most important parts of an Oracle database is its data dictionary, which is a read-only … set of tables that provides information about the database. A data dictionary contains: The … data dictionary is structured in tables and views, just like other database data.

Database Reference, 11g Release 1 (11.1)

Creating Additional Data Dictionary Structures

Creating Additional Data Dictionary Structuresoperating system Table B-2 Creating Additional Data Dictionary Structures

Database Reference, 11g Release 1 (11.1)

About Static Data Dictionary Views

About Static Data Dictionary ViewsData dictionary tables are not directly accessible, but you can access information in them through … data dictionary views. To list the data dictionary views available to you, query the view DICTIONARY … . Many data dictionary tables

Database Concepts, 11g Release 1 (11.1)

The Data Dictionary

Structure of the Data DictionaryThe data dictionary consists of the following: Base Tables: The underlying tables that store … the base tables of the data dictionary. These views decode the base table data into useful … . Users rarely access them directly because they are normalized, and most of the data is stored

Database Reference, 11g Release 1 (11.1)

Static Data Dictionary View Descriptions

Static Data Dictionary View DescriptionsThe remainder of this chapter describes the static data dictionary views in alphabetical order … . Press the \"Next\" button to go to the first static data dictionary view.

Database Performance Tuning Guide, 11g Release 1 (11.1)

The Query Optimizer

11.2.3 Query Optimizer Statistics in the Data DictionaryThe statistics used by the query optimizer are stored in the data dictionary. You can collect exact … or estimated statistics about physical storage characteristics and data distribution in these … must have statistics that are representative of the data. For table columns that contain values … with large variations

Database Administrator's Guide, 11g Release 1 (11.1)

Purging Pending Rows from the Data Dictionary

Executing the PURGE_LOST_DB_ENTRY ProcedureTo manually remove an entry from the data dictionary, use the following syntax (where trans_id is

Database Administrator's Guide, 11g Release 1 (11.1)

Purging Pending Rows from the Data Dictionary

Determining When to Use DBMS_TRANSACTIONThe following tables indicates what the various states indicate about the distributed transaction what the administrator's action should be: STATE Column State of Global Transaction State of Local Transaction Normal Action Alternative Action Collecting Rolled back Rolled back None PURGE_LOST_DB_ENTRY (only if autorecovery cannot resolve transaction) Committed Committed Committed None PURGE_LOST_DB_ENTRY

Database Concepts, 11g Release 1 (11.1)

The Data Dictionary

How the Data Dictionary Is UsedThe data dictionary has three primary uses: Oracle Database accesses the data dictionary to find … dictionary every time that a data definition language (DDL) statement is issued. Any Oracle Database … user can use the data dictionary as a read-only

Database Concepts, 11g Release 1 (11.1)

The Data Dictionary

SYS, Owner of the Data DictionaryThe Oracle Database user SYS owns all base tables and user-accessible views of the data dictionarydata in data dictionary tables can permanently and detrimentally affect the operation of a database. … contained in the SYS schema, because such activity can compromise data integrity.


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