Rolling Upgrade Error in Script

Few months back we were upgrading our AIX based database from 11gR2 [11.2.0.4] to 12c [12.2.0.1] by rolling upgrade. When we run physru_v3.sh script it is giving error:

WARN: The last execution of this script either exited in error or at the

-e user's request. At this point, there are three available options:

-e 1) resume the rolling upgrade where the last execution left off

-e 2) restart the script from scratch

-e 3) exit the script

-e

Option (2) assumes the user has restored the primary and physical

-e standby back to the original configuration as required by this script.

-e Enter your selection (1/2/3):

-e Sep 24 11:17:59 2019 [0-1] not a valid option - ''

-e Enter your selection (1/2/3):

-e Sep 24 11:17:59 2019 [0-1] not a valid option - ''

-e Enter your selection (1/2/3):

-e Sep 24 11:17:59 2019 [0-1] not a valid option - ''

Solution:

The issue is caused by the following setup:

in physru_v3.sh script change first line from below and then rerun the script

#!/bin/sh

to

#!/bin/bash  <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<