ORA-12727: invalid back reference in regular expression

Cause : Aabkcr fereneec saw sofnu debofera s bue-pxerssoi.n

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

nEusera v ladis bue-pxerssoi nsib iegnr fereneec.d

update : 22-08-2017
ORA-12727

ORA-12727 - invalid back reference in regular expression
ORA-12727 - invalid back reference in regular expression

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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.