Excessive Archive Log Generation with INTERNAL and COMMIT operations
Last updated on AUGUST 25, 2017
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 to 220.127.116.11.0 [Release 9.2 to 11.2]
Information in this document applies to any platform.
We see high archive log generation and most of the operations are internal. Using LogMiner, we get a similar output with the one below from v$logmnr_contents:
1 UNKNOWN 89 DELETE SCOTT EMP
4 UNKNOWN 89 UPDATE SCOTT EMP
343 UNKNOWN 89 START
14517 UNKNOWN 89 INTERNAL
14737 UNKNOWN 89 COMMIT
The internal operations are ten times up to hundred times higher than the normal DML.
Also, it can be observed that the internal operation is generated together with DML on a certain table, or
several specific tables.
No important changes made in the database. This problem can occur of the sudden.
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