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Streams Overflow Table Leaving Orphaned Messages in State 7 (Doc ID 242664.1)

Last updated on FEBRUARY 15, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

When the in-memory buffers that OracleStreams uses exceed their capacity, the messages are spilled to an overflow table owned by the Streams administrator called AQ$_<queue_table_name>_P. In some situations these messages are not purged, and this table can become quite large. This can be
assessed with the following query:


Status 7 indicates that the messages has been spilled, but also has been processed (is not deferred).

Cause

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