Cause
A global transaction background process died.
A global transaction background process died.
Warm start instance
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/139061
https://community.oracle.com/message/4487935
https://community.oracle.com/message/3422580
https://community.oracle.com/message/2138236
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