Answer / guest

Cause: Under certain circumstances, for example, when the
database is read only, olapi history retention is not
possible because it requires updating persistent tables from
time to time. If olapi history retention has been disabled,
setting _olapi_history_retention parameter to true has no
effect.

Action: Ensure that Oracle is properly installed with the
OLAP option. If the RDBMS has been patched, review the patch
log for errors. If the problem persists, report it to Oracle
Customer Support.

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