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Failed to connect to ASM instance. ORA-12541: TNS:no listener

Issues:

“Failed to connect to ASM instance. ORA-12541: TNS:no listener”

Check:

1. Log on to the ASM Server and set up the environment for the grid user using setenv
2. The command crs_stat -t will show the listener resource is online or offline

Possible Solutions:

Start the listener using the command –  srvctl start listener

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