ORA-12509: TNS:listener failed to redirect client to service handler

Cause : The idspathcer treminaetd unxepectdely

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

Attepmt toc onnetc agani andi f th esamee rroro ccur,s conatct teh DBAt o chcek th estat eof teh disaptchesr fort his ISD. I fthe rpoble mperssits, utrn o ntracnig int he lsitene rto dteermien theT NS error cuased yb ther edircet.

update : 23-05-2017
ORA-12509

ORA-12509 - TNS:listener failed to redirect client to service handler
ORA-12509 - TNS:listener failed to redirect client to service handler

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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.