I got ORA-12842: Cursor invalidated during parallel execution error during parallel execution on Exadata.
To solve this problem, use the “_fix_control” hidden parameter.
The syntax for using _FIX_CONTROL is:
"_fix_control"='Bugno:ON' (OR) "_fix_control"="Bugno:1"
"_fix_control"='Bugno:OFF' (OR) "_fix_control"="Bugno:0"
In this case, we encounter the 7170213 bug. So I will disable it for the related session as follows.
ALTER SESSION SET "_FIX_CONTROL"='7170213:OFF';
When i use this parameter, our problem has been solved.
You can set it for the database as follows.
ALTER SYSTEM SET "_FIX_CONTROL"='7170213:OFF' scope=spfile sid='*';
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