Oracle Listener fails to start, error messages TNS-12555, TNS-12560, TNS-00525

Oracle Listener fails to start, error messages TNS-12555, TNS-12560, TNS-00525

Hi friends, today when I try to start listener on my SAP server with oracle 12C, I got the below error:

Problem:

TNS-12555: TNS: Permission denied

TNS-12560: TNS: Protocol adapter error

TNS-00525: Insufficient privilege for operation

Linux Error: 1 : Operation not permitted

Oracle Listener fails to start, error messages TNS-12555, TNS-12560, TNS-00525Cause:

In the directory /var/tmp/.oracle there exist some socket files which do not belong to UNIX user ora<<sid>> and group dba, but to another user (e.g. daemon) and another group (e.g. root).

Solution:

Delete all socket files from directory /var/tmp/.oracle as user root. Then start listener again.

sap listener error TNS-12555, TNS-12560, TNS-00525

 

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