ORA-22280: no more buffers available for operation
Cause : There are two causes: (1) All buffers in the buffer pool have been used up by previous operations (2) Attempt to flush a LOB without any previous buffered update operations.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
For (1), flush the LOB(s) through the locator that is being used to update the LOB. For (2), write to the LOB through a locator enabled for buffering before attempting to flush buffers.
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.