The destination specified by an ALTER SYSTEM ARCHIVE LOG START TO command was too long.
Retry the ALTER SYSTEM command using a string shorter than the limit specified in the error message.
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Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/36390
https://community.oracle.com/message/36407