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TNS-12532 TNS-12560 TNS-00502 Errors Starting The 9i R2 TNS Listener (Doc ID 380506.1)

Last updated on JANUARY 27, 2020

Applies to:

Oracle Net Services - Version 9.2.0.6.0 and later
Information in this document applies to any platform.

Symptoms

Suddenly the Oracle9i R2 (9.2.0.6.0)  TNS Listener fails to start with the following errors:

Errors:

LSNRCTL> start LISTENER9 
Starting /u01/app/oracle/product/9.2.0/bin/tnslsnr: please wait... 

TNSLSNR for HPUX: Version 9.2.0.6.0 - Production 
System parameter file is 
/u01/app/oracle/product/9.2.0/network/admin/listener.ora 
Log messages written to /u01/app/oracle/product/9.2.0/network/log/listener.log 
Error listening on: (ADDRESS=(PROTO =tcp)(PORT=1521)) 
TNS-12532: TNS:invalid argument 
TNS-12560: TNS:protocol adapter error 
TNS-00502: Invalid argument



Also the Listener trace shows problem reading the sqlnet.ora file:

.... 
[29-JUL-2006 13:43:44:664] ntvllt: Not successful in reading 
/u01/app/oracle/product/9.2.0/network/admin/sqlnet.ora 
[29-JUL-2006 13:43:44:664] ntvllt: exit 
[29-JUL-2006 13:43:44:664] ntvlin: exit 
[29-JUL-2006 13:43:44:664] nttcnp: Validnode Table **NOT** used; err 0x1f6 
[29-JUL-2006 13:43:44:664] nttcnp: exit 
[29-JUL-2006 13:43:44:664] nttcon: exit 
[29-JUL-2006 13:43:44:664] nserror: entry 
[29-JUL-2006 13:43:44:664] nserror: nsres: id=0, op=65, ns=12532, ns2=12560; nt[0]=502, nt[1]=0, 
nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0 
[29-JUL-2006 13:43:44:664 ] nsopen: unable to open transport 
....


Cause

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In this Document
Symptoms
Cause
Solution


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