ORA-12537 TNS: Connection Closed

This error occurred while retrieving RMAN Backup

ORA-12537 TNS: Connection Closed how to solve ths error in databse

Hi,

Would you please provide more information about this problem if it is related to SQL Optimizer for Oracle? Your steps to reproduce the problem and the actual vs expected result would be very helpful for us to understand the question better.

Thanks,
Alex

IMHO, almost always, this error is related to some firewall problems.