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ORA-12560: TNS:protocol adaptor error
- January 18, 2020
- Posted by: Ankush Thavali
- Category: Oracle DBA
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This is the common error in oracle database related to oracle database connection
Problem Statement
ORA-12560: TNS:protocol adaptor error
Solutions
- Check if your database is up and running
- Make sure listener is up and running
- Crosscheck if your ORACLE_HOME and ORACLE_SID set up properly
- if you are using windows server then go to services.msc and look for oracle service of database. service needs to be started.
- Also check for firewall issue
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