Download Oracle 11g Streams Implementers Guide by TOM LASZEWSKI JASON WILLIAMSON PDF

By TOM LASZEWSKI JASON WILLIAMSON

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MAINTAIN_* scripts). ADD_RULE and DBMS_CAPTURE_ADM subprograms. CONTENT=METADATA_ONLY is not supported with TRANSPORTABLE TABLESPACE mode. Make sure to include handling expected data differences between sites in your Capture and/or Apply processes as necessary (see Chapter 6 for more information on data transformation and conflict resolution techniques that can be useful). ADD_RULE and DBMS_CAPTURE_ADM subprograms manually. Make sure to configure transformation rules for the structural differences, and handlers for the data differences.

Both of these processes may not be constantly running, so they should be monitored over time. Also, there may be multiple Capture and/or LogMiner processes running. Downstream Capture The Capture process usually resides on the Source database. This configuration is called Local Capture (and sometimes Upstream Capture). The Source database is defined as containing both the Capture process and the tables being captured. There is another Capture configuration that can be used called Downstream Capture.

Capture, Propagate, Apply database processes: Persistent database processes that accomplish the Capture, Propagation, and Apply tasks. • Capture, Propagate, Apply rules/transformation via PL/SQL: PL/SQL blocks that define how data should be manipulated by the various processes. • Logical change record types: Specialized record types used by Streams to store and manage database change message payloads. • Database links/Oracle Net: Provides an operating system independent connectivity between database sites.

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