Potential SQL Performance Degradation When Using "In Database Row Archiving"
Last updated on JUNE 26, 2016
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Information in this document applies to any platform.
- With "In Database Row Archiving", queries may require more buffer gets and physical reads to retrieve the same data volume
- There may be execution plan change compared to original execution plan before "In Database Row Archiving" was activated
NOTE: In database archiving for a table adds an invisible column ORA_ARCHIVE_STATE table which controls if the row can be retrieved or not during SELECT or DML(s). This allows records to be archived versus deleted and remain in the table to be restored at a later date if needed. As a side effect, there is potential for plan and performance changes to queries accessing these tables.
Enabled "In Database Row Archiving" using following syntax:
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