TNS-00583: Valid node checking: unable to parse configuration parameters


Sometimes You can get “TNS-00583: Valid node checking: unable to parse configuration parameters ” error.


Details of error are as follows.

TNS-00583: Valid node checking: unable to parse configuration parameters
Cause: Valid node checking was unable to parse the configuration due to syntactical errors.
Action: Ensure that the configuration syntax matches the Oracle reference manual documented syntax.
For further details, turn on tracing and reexecute the operation.

during lsnrctl start

TNS-12560: TNS:protocol adapter error

TNS-00583: Valid node checking: unable to parse configuration parameters


To implement a possible solution, please execute the following steps:

1. Backup the existing files in the Oracle Home/network/admin location by renaming them from .ora to .org

2. Create a new Listener.ora file using NetManager or Net Configuration Assistant GUI utility.

2.a. Launch the tool.
Net Manager can be located under:

Start –> Programs–> Oracle_home–> Configuration and Migration Tools

Unix Based:
$ netmgr

2.b. Add the listener.
– Expand ‘Local’ in the left pane
– Click the ‘listeners’ , press the green ‘+’ on the left pane which will invoke a wizard to add the listener.
– Provide the details of the listener in the wizard.

3. Create a new Sqlnet.ora file in the same way with one of the Nettools such as NetManager.
– On expanding the ‘Local’ in NetManager’s left pane, click the ‘Profile’.
– On the right hand pane, there would be ‘Naming’ tab.
– Make certain your naming method (TNSNAMES, etc.) is selected
– Also, make certain any ‘General’ or ‘Oracle Advanced Security’ selections are correct

3.a. On the top menu of Net Manager, click on File –> save network Configuration and then exit netmanager.


Or Check listener.ora or sqlnet.ora file contains any special characters and Check if Listener.ora or sqlnet.ora file are in wrong format or syntax.
And check listener.ora or sqlnet.ora file have some left justified parenthesis .


Do you want to learn more details about RMAN, then read the following articles.


About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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