Day-23 : Performance Diagnostic Reports(AWR/ASH/ADDM/TRACE)

How can you enable a trace for a session?
ALTER SESSION SET SQL_TRACE = TRUE;


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ORA-600 [kwqitnmphe:ltbagi], [1], [0] reported in the alert log file.

ORA-00600 [kwqitnmphe:ltbagi] Cause: This issue arises in 12.1.0.2. The error occurs because there are still Historical Messages without...