3194460 - Getting error during Hana Revision upgrade - Connect failed (code = 10): authentication failed

During HANA revision upgrade, you face with the error below:

 - INFO: Summary of critical errors
 - ERR :   Upgrade failed
 - ERR :     error upgrading
 - ERR :       Import of delivery units failed
 - ERR :         Cannot check already imported delivery units
 - ERR :           Connect failed: Connect failed (code = -10709): Connection failed (RTE:[89006] System call 'connect' failed, rc=111:Connection refused {XXX} (XXX))

You have also activated the SYSTEM user and reset the password, however it failed with:

"Connecting to database ... encryption=off Connect failed: Connect failed (code = 10): authentication failed"

SAP HANA, platform edition 2.0

connection refused, authentication failed, upgrade, hdblcm, code = 10     , KBA , HAN-LM-UPG-DB , Upgrade of HANA Database , Problem