Postgres Password Change (Data Director DBVM)

Hi

  How to change the postgres password in a vpostgres DBVM (Data Director).?

Scenario:- If we change the postgres password from Data Director GUI and try to connect to Database, then it through error "Could not connect to database. Please enter correct credentials and try again".

From the vpostgres database CLI "  postgres@localhost:/opt/aurora/postgresql/bin> ./psql -c "alter user postgres password 'ijkl123'" . also didnot help.

Any suggestions on how to change the postgres password of vpostgres database(particularly Data Director DBVM) is appreciable.

Note:- The vpostgres (Not for Data Director) and vpostgres appliance for DataDirector are two different "interms of  command's location, log file location, scripts...etc".