Cause
The character argument of a collation-sensitive operator was too long or it had too many decomposable characters to create a collation key for it in the available buffer space.
The character argument of a collation-sensitive operator was too long or it had too many decomposable characters to create a collation key for it in the available buffer space.
Shorten the argument value or, if using a UCA-based collation, increase the ratio of characters with short or no Unicode decomposition to characters with long Unicode decomposition in the value.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17209/functions120.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17750/ch5lingsort.htm
https://community.oracle.com/message/11332224
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