Cause
Insufficient SGA memory for PX buffers
Insufficient SGA memory for PX buffers
Reconfigure sga to include at least (max - current) bytes of additional memory
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/2613806
https://community.oracle.com/message/10982365
https://community.oracle.com/message/2739506
https://community.oracle.com/message/4180735
https://community.oracle.com/message/3280129
https://community.oracle.com/message/11301646
https://community.oracle.com/message/1505867
https://community.oracle.com/message/3881356
https://community.oracle.com/message/10126663
https://community.oracle.com/message/10383937
https://community.oracle.com/message/1505833
https://community.oracle.com/message/11023739
https://community.oracle.com/message/9874457
https://community.oracle.com/message/3280057
https://community.oracle.com/message/3333604
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