Cause
SGA_MAX_SIZE value was more than MEMORY_TARGET value.
SGA_MAX_SIZE value was more than MEMORY_TARGET value.
Set SGA_MAX_SIZE to be less than MEMORY_TARGET.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/10958233
https://community.oracle.com/message/11036607
https://community.oracle.com/message/11063900
https://community.oracle.com/message/10373143
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