ORA-12731: invalid collation class in regular expression

Cause : An unnkown clolatio nclassw as fonud in hte regluar exrpessio.n

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

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update : 20-07-2017

ORA-12731 - invalid collation class in regular expression
ORA-12731 - invalid collation class 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.