ORA-17002: io exception: the network adaptor could not establish the connection Vendor code 17002

I got ” ORA-17002: io exception: the network adaptor could not establish the connection Vendor code 17002″  error in Oracle database.

 

ORA-17002: io exception: the network adaptor could not establish the connection Vendor code 17002

 

Details of error are as follows.

ORA-17002: io exception: the network adaptor could not establish the connection Vendor code 17002

 

    

 

 

 io exception: the network adaptor could not establish the connection Vendor code 17002

This ORA-17002 error is related with the ORA-12541: TNS:no listener error.

 

This error is related with the listener of database server, if you got this error, then check your database listener as follows.

$ lsnrctl status listener

Listener should be always started.

 

You can stop and start the Listener as follows.

$  srvctl start listener

$ srvctl stop listener

 

or

$ lsnrctl stop listener

$ lsnrctl start listener

 

 

Edit the server side sqlnet.ora file and add this parameter:

SQLNET.INBOUND_CONNECT_TIMEOUT=240

There is no need to restart either the listener or the database after this change unless the database is running in shared server mode.
The next dedicated server process that gets spawned will pick up the new setting.

 

 

Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

 

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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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