Subscriber Count

    464

Subscribe to Posts by Email

Pages

Oracle 12c Upgrade : Virtual Column with Function Based Index (bug)

Issue: Post 12C upgrade: Oracle Bug – Virtual Column issue

Fix: Set it at session level or system level – fix_control=’16237969:OFF’

Be aware of the virtual column getting created with function based index, which may lead to sub-optimal plans.

In 11g , index is getting picked by the oracle optimizer and going with optimal Plan. […]

Oracle 12.2 New Features : Approximate Query Processing

While sometime ago, I was looking for a database project requirement to process analytical workload. The organisation choice was Oracle and Developers choice was postgres or vertica. But to handle Vertica we do not have that much of data processing actually needed so the final contenders are Oracle and Postgres.

As per licensing guidelines I […]

AWR Report – Error ORA-13605: The specified task or object does not exist for the current user.

When you run the awr report with non privileged user i.e custom user (even with dba privilege) you may receive the following error.

@?/rdbms/admin/awrrpt.sql

ORA-13605: The specified task or object does not exist for the current user.

Error encountered in special section 99995

The possible cases are,

missing grant on sys.dbms_advisor bug 17588463 — found […]