What should I do if the error ORA-12546: TNS: Permission denied appears on the Linux computer where Oracle is installed?

If a Backup Exec operation fails on the Linux computer on which the Oracle instances are installed, and the error in the RMAN output section is ORA-12546: TNS: Permission denied, then you must change the machine-level resource credentials in the job. The resource credentials must be an account that is a member of the dba and beoper groups on the Linux computer. Retry the operation.

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