Cause
invalid value for db_block_size parameter
invalid value for db_block_size parameter
adjust parameter and restart
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/4388832
https://community.oracle.com/message/1267212
https://community.oracle.com/message/4079844
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