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Executing LCRs → There are separate EXECUTE member procedures for row LCRs and DDL LCRs. These member procedures … row LCRs and DDL LCRs: Executing Row LCRs Executing DDL LCRs
Constructing and Enqueuing LCRs → Use the following LCR constructors to create LCRs: To create a row LCR that contains a change to a … process, because the apply process will be applying persistent LCRs, not captured LCRs. Also, ensure … LCR constructors Create and enqueue LCRs using the construct_row_lcr procedure created in Step 5. In
Executing Row LCRs → The EXECUTE member procedure for row LCRs is a subprogram of the LCR$_ROW_RECORD type. When the … LCRs\" \"Managing a DML Handler\" for an example of a DML handler that runs the EXECUTE member … procedure on row LCRs Oracle Database PL/SQL Packages and Types Reference for more information about row … LCRs and
Requirements for Managing LCRs → This section describes requirements for creating or modifying logical change records (LCRs). You … an apply handler or a rule-based transformation. You can modify captured LCRs or persistent LCRs … -constructed row LCR. However, you can use certain techniques to construct LCRs that contain LOB information … .
Executing DDL LCRs → The EXECUTE member procedure for DDL LCRs is a subprogram of the LCR$_DDL_RECORD type. When the … would be run for the LCR are not run. The EXECUTE member procedure for DDL LCRs can be invoked only … in an apply handler for an apply process. All applied DDL LCRs commit automatically. Therefore, if a … automatically. See Also:
Logical Change Records (LCRs) → LCRs: row LCRs and DDL LCRs. A capture process, synchronous capture, or an application can capture … LCRs. You can capture the following types of LCRs with Oracle Streams: A captured LCR is an LCR that … the DBMS_APPLY_ADM package There are no differences between persistent LCRs that
C XML Schema for LCRs → Go to main content 47/51 C XML Schema for LCRs The XML schema described in this appendix defines … for LCRs. The namespace for this schema is the following: http://xmlns.oracle.com/streams/schemas … Definition of the XML Schema for LCRs The following is the XML schema definition for LCRs: '
Track LCRs Through a Stream → $STREAMS_MESSAGE_TRACKING view to track the LCRs through the stream and see how they were processed by … each Oracle Streams client. LCR tracking is useful if LCRs are not being applied as expected by one … or more apply processes. When this happens, you can use LCR tracking to determine where the LCRs … message_tracking_frequency
Tracking LCRs Through a Stream → capture database changes implicitly. An application or user can construct and enqueue LCRs to … $STREAMS_MESSAGE_TRACKING view to track the LCRs through the stream and see how they were processed by each Oracle Streams … client. LCR tracking is useful if LCRs are not being applied as expected by one or more apply … processes.
Managing LCRs Containing LOB Columns → LOB data types can be present in row LCRs captured by a capture process, but these data types are … represented by other data types. LOB data types cannot be present in row LCRs captured by synchronous … captures. Certain LOB data types cannot be present in row LCRs constructed by users. Table 11-1 … LCRs. Table
Apply Processing Options for LCRs → An apply process is a flexible mechanism for processing the logical change records (LCRs) in a … LCRs, not non-LCR user messages. This section discusses the LCR processing options available to you … with an apply process. Captured LCRs and Persistent LCRs A single apply process can apply messages from … contains
11 Managing Logical Change Records (LCRs) → This chapter contains instructions for managing logical change records (LCRs) in an Oracle Streams … replication environment. This chapter contains these topics: Requirements for Managing LCRs … Constructing and Enqueuing LCRs Executing LCRs Managing LCRs Containing LOB Columns Managing LCRs
Requirements for Constructing and Processing LCRs Containing LOB Columns → If your environment produces row LCRs that contain LOB columns, then you must meet the requirements … in the following sections when you construct or process these LCRs: Requirements for Constructing … and Processing LCRs Without LOB Assembly Requirements for Apply Handler Processing of LCRs with LOB … Assembly
LOB Assembly and Custom Apply of LCRs Containing LOB Columns → a change to a row that includes one or more LOB columns can result in multiple row LCRs. An apply … process that does not send row LCRs that contain LOB columns to an apply handler can apply these row … LCRs directly. However, prior to Oracle Database 10 g Release 2, custom processing of row LCRs that … LCRs
Example Script for Constructing and Enqueuing LCRs Containing LOBs → LCRs containing LOBs. This example assumes that you have prepared your database for Oracle Streams … Necessary Privileges on the Tables Create a PL/SQL Procedure to Enqueue LCRs Containing LOBs Create the … with_blob TO strmadmin; COMMIT; /* Step 8 Create a PL/SQL Procedure to Enqueue LCRs Containing LOBs
Apply Process Behavior for Direct Apply of LCRs Containing LOBs → An apply process behaves in the following ways when it applies an LCR that contains a LOB column directly (without the use of an apply handler): If an LCR whose command type is INSERT or UPDATE has a new LOB that contains data, and the lob_information is not DBMS_LCR.LOB_CHUNK or DBMS_LCR.LAST_LOB_CHUNK, then the data is applied. If an LCR whose command type is INSERT or UPDATE has a new LOB that
Managing LCRs Containing LONG or LONG RAW Columns → LONG and LONG RAW data types all can be present in row LCRs captured by a capture process, but … these data types are represented by the following data types in row LCRs. LONG data type is represented … as VARCHAR2 data type in row LCRs. LONG RAW data type is represented as RAW data type in row LCRs. A … LCRs.
Creating an ANYDATA Queue to Stage LCRs → In an Oracle Streams replication environment, ANYDATA queues stage LCRs that encapsulate captured
Excluding Extra Attributes from Implicitly LCRs → To exclude an extra attribute from the LCRs captured by a capture process or synchronous capture
Creating an Apply Process for Captured LCRs → : Creates an apply process named strm01_apply that applies captured LCRs to the local database. The apply … system generated. Creates one rule that evaluates to TRUE for row LCRs that contain the results of … apply process. Specifies that the LCRs applied by the apply process originate at the dbs1.example.com
Creating a Propagation that Propagates LCRs → To replicate LCRs between databases, you must propagate the LCRs from the database where they were … \"Creating an ANYDATA Queue to Stage LCRs\" for instructions. Create a database link between the database … the propagation propagates LCRs from strep01_queue in the current database to strep02_queue in the … propagate
Managing Extra Attributes in Captured LCRs → it is capturing currently. The extra attributes are the following: row_id (row LCRs only) serial … : Including Extra Attributes in Implicitly LCRs Excluding Extra Attributes from Implicitly LCRs See … Also: \"Extra Information in LCRs\" \"Viewing the Extra Attributes Captured by Implicit Capture
Including Extra Attributes in Implicitly LCRs → To include an extra attribute in the LCRs captured by a capture process or synchronous capture, run
Does the Apply Process Apply Captured LCRs? → = 'APPLY'; If the apply process applies captured LCRs, then your output looks similar to the
Are Incorrectly Transformed LCRs in the Error Queue? → In some cases, incorrectly transformed LCRs might have been moved to the error queue by an apply … from acting on LCRs that are not involved with the error transaction. After successful reexecution
Creating an Apply Process for Captured LCRs with DBMS_APPLY_ADM → process applies captured LCRs, and not persistent LCR s or persistent user message s. Therefore, if an … . Specifies that the LCRs applied by the apply process originate at the dbs1.example.com source
Creating an Apply Process That Applies Captured LCRs → change records (LCRs). Captured LCRs are LCRs that were captured by a capture process. You can use any … of the following procedures to create an apply process that applies captured LCRs … captured LCRs: BEGIN DBMS_STREAMS_ADM.ADD_SCHEMA_RULES( schema_name => 'hr', streams_type => 'apply … strep01_apply
Creating an Apply Process That Applies Persistent LCRs and User Messages → This section contains instructions for creating an apply process that applies persistent LCRs and … persistent user messages. Persistent LCRs are row logical change records (row LCRs) that were … DBMS_APPLY_ADM.CREATE_APPLY procedure to create an apply process that applies persistent LCRs and persistent user
Viewing the Capture Processes for the LCRs in Each Buffered Queue → LCRs can be propagated to other queues subsequently. By querying the V$BUFFERED_PUBLISHERS dynamic … performance view, you can display each capture process that captured the LCRs in the buffered queue … . These LCRs might have been captured at the local database, or they might have been captured at a … that the buffered queues
22.6 Propagating User-Enqueued LCRs from ANYDATA Queues to Typed Queues → You can propagate user-enqueued LCRs to an appropriate typed queue, but propagation of captured … LCRs to a typed queue is not supported. See Also: \"Streams Capture Process\" in Oracle Streams … Concepts and Administration for more information on capture processes To propagate user-enqueued LCRs from … package to transform LCRs
228 Logical Change Record TYPEs → This chapter describes the logical change record (LCR) types. In Oracle Streams, LCRs are message … captures changes in the form of LCRs and enqueues them into a queue. These LCRs can be propagated from a … queue in one database to a queue in another database. Finally, the apply process can apply LCRs at a … destination
SET_MESSAGE_TRACKING Procedure → Sets the tracking label for logical change records (LCRs) produced by the current session. This … procedure affects only the current session. Any LCRs produced by the current session are tracked … , including captured LCRs and persistent LCRs. Note: The tracking label set by this procedure does not … Description
CONVERT_XML_TO_LCR Function → (LCRs) into an LCR encapsulated in a ANYDATA object. The LCR can be a row or DDL LCR. See Also: Oracle … Streams Concepts and Administration for more information about the XML schema for LCRs Syntax … object does not conform to XML schema for LCRs, then the function raises an exception.
Overview → database level. These rules support logical change records (LCRs), which include row LCRs and data … definition language (DDL) LCRs. This package also contains subprograms for creating message rules for
SET_TABLE_INSTANTIATION_SCN Procedure → … This procedure gives you precise control over which logical change records (LCRs) for a table are … ignored and which LCRs are applied by an apply process. Syntax DBMS_APPLY_ADM.SET_TABLE_INSTANTIATION_SCN … is used on the following types of LCRs: Row LCRs for the table DDL LCRs that have a
INCLUDE_EXTRA_ATTRIBUTE Procedure → This procedure includes or excludes an extra attribute in logical change records (LCRs) captured by … included in or excluded from LCRs captured by the capture process or synchronous capture. The following … included in DDL LCRs, or in row LCRs for index-organized tables. The type is VARCHAR2. serial# The serial
CONVERT_LCR_TO_XML Function → object that conforms to the XML schema for LCRs. The LCR can be a row LCR or a DDL LCR. See Also … : Oracle Streams Concepts and Administration for more information about the XML schema for LCRs Syntax
SET_SCHEMA_INSTANTIATION_SCN Procedure → precise control over which DDL logical change records (LCRs) for a schema are ignored and which DDL … LCRs are applied by an apply process. Syntax DBMS_APPLY_ADM.SET_SCHEMA_INSTANTIATION_SCN … following types of DDL LCRs: DDL LCRs with a command_type of CREATE TABLE DDL LCRs with a non- NULL
Operational Notes → manipulation language (DML) changes made to a table, to logical change records (LCRs), or to user … DDL change is a DDL LCR. LCRs can either represent changes that were captured by a capture process or … LCRs Propagation Rules for User Messages Apply Process Rules for LCRs Apply Process Rules for User … Messages