KewastUnPackStats(): Bad Magic 1 (0xXXXXXXXXX, 0)

Today I have seen the net error in the alert.log;

kewastUnPackStats(): bad magic 1 (0xffffffff7a3bbdf8, 0)

After a working looking for this error at MOS. I see that the problem occurs where querying the (G)V$ACTIVE_SESSION_HISTORY view, as shown below;

select * from v$active_session_history;

It is the bug 8730312 and the solution is apply Patch 8730312, only avaliable for any enviroments. The best option is upgrade database if possible.



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