postgres=# <span style="color: #ff0000;"><strong>show data_directory;</strong></span>
     data_directory
------------------------
 /var/lib/edb/as11/data
(1 row)

-bash-4.2$ mkdir -p /oradata/pgdata
-bash-4.2$ chmod 0700 /oradata/pgdata

-bash-4.2$ <span style="color: #ff0000;"><strong>systemctl status edb-as-11</strong></span>
● edb-as-11.service - EDB Postgres Advanced Server 11
   Loaded: loaded (<span style="color: #ff0000;"><strong>/usr/lib/systemd/system/edb-as-11.service</strong></span>; disabled; vendor preset: disabled)
   Active: active (running) since Mon 2020-12-28 11:22:01 +03; 5 months 14 days ago
 Main PID: 30787 (edb-postmaster)
    Tasks: 10
   Memory: 8.2G
   CGroup: /system.slice/edb-as-11.service
           ├─25828 postgres: checkpointer
           ├─25829 postgres: background writer
           ├─25831 postgres: walwriter
           ├─25832 postgres: autovacuum launcher
           ├─25835 postgres: archiver   last was 0000000100000010000000C8
           ├─25836 postgres: stats collector
           ├─25837 postgres: dbms_aq launcher
           ├─25838 postgres: logical replication launcher
           ├─30787 /usr/edb/as11/bin/edb-postmaster -D /var/lib/edb/as11/data
           └─30790 postgres: logger
-bash-4.2$

-- Run stop command
-bash-4.2$ <span style="color: #ff0000;"><strong>systemctl stop edb-as-11


</strong></span>

-bash-4.2$ cd  /var/lib/edb/as11/data
-bash-4.2$ cp -r * /oradata/pgdata/
-bash-4.2$ ls -ltr   /oradata/pgdata/

[root]#  <span style="color: #ff0000;"><strong>cp /usr/lib/systemd/system/edb-as-11.service /etc/systemd/system/</strong></span>
[root]# cd /etc/systemd/system/
[rootsystem]# ls -ltr edb*
-rw-r--r-- 1 root root 1396 Jun 13 06:41 edb-as-11.service

-- Edit below path, pointing to new data_directory 

[root@scdvlbss14 system]# vi edb-as-11.service


# Location of database directory
Environment=PGDATA=/oradata/pgdata
PIDFile=/oradata/pgdata/postmaster.pid

# FILE LOCATIONS
#------------------------------------------------------------------------------

# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.

#data_directory = 'ConfigDir'           # use data in another directory
                                        # (change requires restart)
#hba_file = 'ConfigDir/pg_hba.conf'     # host-based authentication file
                                        # (change requires restart)
#ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
                                        # (change requires restart)

[root#]
<span style="color: #ff0000;">systemctl daemon-reload

</span>

[root]# <span style="color: #ff0000;"><strong>systemctl start edb-as-11</strong></span>

-- Check status:

[root]# systemctl status edb-as-11
● edb-as-11.service - EDB Postgres Advanced Server 11
   Loaded: loaded (<span style="color: #ff0000;"><strong>/etc/systemd/system/edb-as-11.service</strong></span>; disabled; vendor preset: disabled)
   Active: active (running) since Sun 2021-06-13 06:47:34 +03; 6s ago
  Process: 1741 ExecStartPre=/usr/edb/as11/bin/edb-as-11-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
 Main PID: 1748 (edb-postmaster)
    Tasks: 10
   Memory: 202.8M
   CGroup: /system.slice/edb-as-11.service
           ├─1748 /usr/edb/as11/bin/edb-postmaster -D /oradata/pgdata
           ├─1751 postgres: logger
           ├─1753 postgres: checkpointer
           ├─1754 postgres: background writer
           ├─1755 postgres: walwriter
           ├─1756 postgres: autovacuum launcher
           ├─1757 postgres: archiver
           ├─1758 postgres: stats collector
           ├─1759 postgres: dbms_aq launcher
           └─1760 postgres: logical replication launcher

Jun 13 06:47:33 dbhost1 systemd[1]: Starting EDB Postgres Advanced Server 11...
Jun 13 06:47:33 dbhost1 edb-postmaster[1748]: 2021-06-13 06:47:33 +03 LOG:  listening on IPv4 address "0.0.0.0", port 5435
Jun 13 06:47:33 dbhost1 edb-postmaster[1748]: 2021-06-13 06:47:33 +03 LOG:  listening on IPv6 address "::", port 5435
Jun 13 06:47:33 dbhost1 edb-postmaster[1748]: 2021-06-13 06:47:33 +03 LOG:  listening on Unix socket "/tmp/.s.PGSQL.5435"
Jun 13 06:47:34 dbhost1 edb-postmaster[1748]: 2021-06-13 06:47:34 +03 LOG:  redirecting log output to logging collector process
Jun 13 06:47:34 dbhost1 edb-postmaster[1748]: 2021-06-13 06:47:34 +03 HINT:  Future log output will appear in directory "log".
Jun 13 06:47:34 dbhosg1 systemd[1]: Started EDB Postgres Advanced Server 11.

postgres=# show data_directory;
 data_directory
-----------------
 /oradata/pgdata
(1 row)