The cause of an ORA-12560 error is the occurrence of a generic protocol adapter mistake. This could result from something simple, such as the database not running due to the instance not being set to auto-start. It can also be a temporary error from an SQL*Net client that occurs intermittently.
After an upgrade of Oracle to 19c, attempts to log into sqlplus as sysdba fail with the error ” ORA – 12560 : TNS : Protocol adapter error “. RDP to the Oracle server, launch an Administrator command window, attempt to log into sqlplus as sysdba. The command used to log in is “sqlplus sys/
The ORA-12560 TNS protocol adapter error mostly occurs when the listener is not running, you may be entering the wrong name for the tns service, and if you happen to be a windows machine that actually hosts an Oracle database server, that database service is disabled relative to services Windows. So, with the help of the following basic steps, you can fix this error. Click the “Start” button. Select EXECUTE.
ORA-12560 TNS process error adapter Cause: A generic process error adapter has occurred. Action: Check that the protocol specification of the device being used is correct. Before reporting this bug, take a look at this bug stack and look for low-level direct transport bugs.
Data Loss Prevention Oracle Standard Edition 2 Data Loss Prevention After upgrading to version 19c from Oracle, attempts to infiltrate sqlplus on behalf of sysdba with the message “ORA-12560: TNS Error: Mapping Error Protocol” fail. RDP to Oracle server, marketing admin from command window, try to connect to sqlplus if it’s sysdba.
Tnsping doesn’t work. Because this error is “TNS-12560: TNS: protocol adapter error”. Copyright (c) 1997, Oracle 2005,. All rights reserved. TNS-12560: TNS: protocol adapter error.
How do I fix error ORA-12560 TNS protocol adapter error?
Set the Oracle system id to (sid) C:>set oracle_sid=ORCL. Then run this command start net (C:>net go to oracleserviceORCL). This should fix the ORA-12560 error in this situation.
How do I fix ORA 12560 TNS protocol adapter error?
Set the Oracle system identifier (sid) C:>set oracle_sid=ORCL. Then run the Net Start command (C:>net start oracleserviceORCL). This should fix the ORA-12560 error in all these situations.
When does ora-12560 throw a TNS protocol adapter error?
ORA-12560 occurs when you connect to a database and almost certainly can’t connect. Ideally, TNS would just throw a protocol adapter error. The reason may be one of the following: 1. The receiver is not active. 2. Third party software. 3. Problem with tnsnames.ora file.
What causes ora-12560 TNS protocol adapter error?
ORA-12560: TNS log map error. Sometimes you may receive the message ORA-12560: TNS: protocol adapter error. Judging by the details, the errors are as follows. One reason: A generic protocol adapter error has occurred. Action: Check which addresses are correctly used for the protocol specification.
Why do I get an ora-12560 TNS error?
This error mostly occurs when a user installs Oracle Moments for the first time and tries to link it. When the user tries to insert a username and password, the following error is displayed: This error occurs if the listener is down or if there is a problem with tnsnames or a really high database. After installing Oracle, the user needs to start all services, including the audience.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.