If a non-default MSSQL port is specified when running the "Install_INCR_NT.bat" file to apply Incremental 1 patch RO53528 , the patch installation fails. For example:
Install_INCR_NT.bat -t S -d MSQ -n AEDB,2680 -u sa -p sapswd -s WAAEPROD
AEDB is the db_name
2680 is a non-default MSSQL DB port number
WAAEPROD is the db_server
During the install the patch replaces a number of binaries but then rolls back after it fails to connect to the DB.
As a workaround, the following manual steps can be applied: