Cause
An attempt was made to access a transactional temporary table that has been already populated by a concurrent transaction of the same session.
An attempt was made to access a transactional temporary table that has been already populated by a concurrent transaction of the same session.
Using DROP CONSTRAINT ONLINE or SET UNUSED COLUMN ONLINE statement on constraints that are deferrable or deferred is illegal. Remove the ONLINE keyword from the statement.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/11094346
https://community.oracle.com/message/3840014
https://community.oracle.com/message/1924347
https://community.oracle.com/message/2735351
https://community.oracle.com/message/3186548
https://community.oracle.com/message/10721917
https://community.oracle.com/message/3386074
https://community.oracle.com/message/2629945
https://community.oracle.com/message/2720441
https://community.oracle.com/message/2720198
https://community.oracle.com/message/1393457
https://community.oracle.com/message/4577637
https://community.oracle.com/message/476683
https://community.oracle.com/message/1829582
https://community.oracle.com/message/1829536
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