"ORA-00979: Not A GROUP BY Expression" After Upgrade to Database 12C
Last updated on OCTOBER 27, 2016
Applies to:Oracle Application Express (formerly HTML DB) - Version 4.2.6.00.03 to 5.0.1.00 [Release 4 to 5]
Information in this document applies to any platform.
After upgrading the database to 126.96.36.199, logging into APEX and selecting "Administration" --> "Monitor Activity" ---> "Active Sesssion"
Returns error ORA-00979 : not a GROUP BY expression.
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