Cause
All session state objects are in use.
All session state objects are in use.
Increase the value of the SESSIONS initialization parameter.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e17642/toc.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17642/upgrade.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17642/upgrade.htm
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17615/refrn10197.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17642/upgrade.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17642/toc.htm
http://docs.oracle.com/cd/E16655_01/timesten.121/e21636/awt_trouble.htm
http://docs.oracle.com/cd/E16655_01/appdev.121/e18410/ch_eight.htm
http://docs.oracle.com/cd/E16655_01/appdev.121/e18408/pc_09err.htm
http://docs.oracle.com/cd/E16655_01/appdev.121/e17625/ociaahan.htm
http://docs.oracle.com/cd/E16655_01/appdev.121/e18406/pco08err.htm
https://community.oracle.com/message/10106969
https://community.oracle.com/message/9625040
https://community.oracle.com/message/4024371
https://community.oracle.com/message/10931232
https://community.oracle.com/message/3599071
https://community.oracle.com/message/4542732
https://community.oracle.com/message/1932544
https://community.oracle.com/message/1189333
https://community.oracle.com/message/10857071
https://community.oracle.com/message/8314053
https://community.oracle.com/message/3569356
https://community.oracle.com/message/1594175
https://community.oracle.com/message/2309651
https://community.oracle.com/message/3514864
https://community.oracle.com/message/2524204
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