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ORA-12571 [message #67061] Wed, 30 July 2003 23:33 Go to next message
G Raghunath
Messages: 8
Registered: November 2002
Junior Member
I am able to connect from SQL*Plus client okay.
I have installed SQL Navigator and tried connecting to my server from it.

But when i am using SQL Navigator it gives ORA-12571 :-TNS packet writer failure.

My OS is Window NT Workstation. I am checking the SQLNET.Log on the server.
These are the entries :-

***********************************************************************
Fatal NI connect error 12537, connecting to:
(LOCAL=NO)

VERSION INFORMATION:
TNS for Solaris: Version 8.1.7.4.0 - Production
Oracle Bequeath NT Protocol Adapter for Solaris: Version 8.1.7.4.0 - Pr
oduction
TCP/IP NT Protocol Adapter for Solaris: Version 8.1.7.4.0 - Production
Time: 31-JUL-2003 10:32:24
Tracing not turned on.
Tns error struct:
nr err code: 0
ns main err code: 12537
TNS-12537: TNS:connection closed
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0

Could you please help me in finding a solution to this.
Re: ORA-12571 [message #67062 is a reply to message #67061] Thu, 31 July 2003 06:16 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10707
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
could you comment out the entries in sqlnet.ora and try again?
Re: ORA-12571 [message #67561 is a reply to message #67061] Fri, 08 October 2004 20:55 Go to previous message
Mr.new to oracle
Messages: 1
Registered: October 2004
Junior Member
i m using win 2000 professional,i have installed oracle 9i,oracle forms 6i.i can connect to database from sql but not thro forms ,when i try to connect to database from forms it gives following error, Fatal NI connect error 12571, connecting to:
(DESCRIPTION=(CONNECT_DATA=(SID=*)(SERVICE_NAME=server)(CID=(PROGRAM=C:formsBINifbld60.EXE)(HOST=PC1)(USER=Administrator)))(ADDRESS=(PROTOCOL=TCP)(HOST=server)(PORT=1521)))

VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.0.6.0.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.0.6.0.0 - Production
Time: 28-SEP-04 14:44:08
Tracing not turned on.
Tns error struct:
nr err code: 12206
TNS-12206: TNS:received a TNS error during navigation
ns main err code: 12571
TNS-12571: TNS:packet writer failure
ns secondary err code: 12560
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
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