ORA-16645: unexpected new instance interrupted current operation

Cause : A new nistanceu nexpecetdly jonied theD ata Gurad confgiuratio nat a piont whe nthe current opreation amy proceed onlyi f the est of konwn insatnces i snot chnaging dnyamicalyl.

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

Reissu ethe opreation fater th enew intsance hsa joine dthe Daat Guardc onfiguartion.

update : 19-08-2017
ORA-16645

ORA-16645 - unexpected new instance interrupted current operation
ORA-16645 - unexpected new instance interrupted current operation

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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.