DBMS_UTILITY.FORMAT_CALL_STACK Is Slower in 11g When Compared to 10g in IBM AIX Platform.
(Doc ID 1450540.1)
Last updated on MARCH 21, 2019
PL/SQL - Version 188.8.131.52 to 184.108.40.206 [Release 11.2] IBM AIX on POWER Systems (64-bit)
Application makes extensive use of the DBMS_UTILITY.FORMAT_CALL_STACK function and after upgrade to 11.2 from 10.2.0.5, performance has severely impacted (ie) it takes 40x more times to compile.
After receiving a patch for <bug 12740358> (which has been superseded by <bug 14019092>), the performance has improved a bit but the below tests still shows a degradation of 8 times over 10g.
This is specific IBM AIX platform.
Database base upgraded from lower version to 11.2.0.x.
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