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  Oracle Tips by Burleson

Oracle Streams
Chapter 5 -
Apply Process Configuration

Apply Servers:

  • IDLE - Performing no work
     

  • RECORD LOW-WATERMARK - Performing an administrative action that maintains information about the Apply progress, which is used in the all_apply_progress and dba_apply_progress data dictionary views
     

  • ADD PARTITION - Performing an administrative action that adds a partition that is used for recording information about in-progress transactions
     

  • DROP PARTITION - Performing an administrative action that drops a partition that was used to record information about in-progress transactions
     

  • EXECUTE TRANSACTION - Applying a transaction
     

  • WAIT COMMIT - Waiting to commit a transaction until all other transactions with a lower commit SCN are applied. This state is possible only if the commit_serialization Apply process parameter is set to a value other than NONE and the parallelism Apply process parameter is set to a value greater than 1
     

  • WAIT DEPENDENCY - Waiting to apply an LCR in a transaction until another transaction, on which it has a dependency, is applied. This state is possible only if the parallelism Apply process parameter is set to a value greater than 1
     

  • WAIT FOR NEXT CHUNK - Waiting for the next set of LCRs for a large transaction
     

  • TRANSACTION CLEANUP - Cleaning up an applied transaction, which includes removing LCRs from the Apply process queue

The following SQL block shows the details from the apply server.

COL FROM_STREAMS_APPLY_SERVER format a60


The above text is an excerpt from:

Oracle Streams
High Speed Replication and Data Sharing

ISBN 0-9745993-5-2

by Madhu Tumma
 


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