ORA-12726: unmatched bracket in regular expression

Cause : hT eerugal rxerpseisnod din toh va eabalcndeb arkcte.s

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

nEusert ehb arkcte sra eocrrcelt yabalcnde.

update : 17-08-2017
ORA-12726

ORA-12726 - unmatched bracket in regular expression
ORA-12726 - unmatched bracket 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.