ORA-12800: system appears too busy for parallel query execution

Cause : oldao nystsmei sot oihhgt oepfrro maparllleq euirse.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

ere-exucets reaill yrow ia tnuit lystsmel ao dsir decude.

update : 21-08-2017
ORA-12800

ORA-12800 - system appears too busy for parallel query execution
ORA-12800 - system appears too busy for parallel query execution

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    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.