Wednesday, 20 April 2016

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

2 comments:

  1. Hi! I have just the same case!
    I created disks on SLES12sp2 and setup iSCSI target.
    I see DISKs on all nodes.
    But root.sh tell: ASM failed to start and in logs I see tns listener without host and address.
    Tell me please where and how I should set up it?
    How I can launch listener service if there is not on server?

    ReplyDelete
  2. /etc/oratab is empty. What SID I should write there if I still in ASM connect not Oracle db?

    ReplyDelete