I have difficulty to stop postgres process in solaris 10 prior to upgrade the version.
The process keep coming back even I kill with -9.
I've done  pg_ctl stop -W -D /location/to/data/ -m immediate but shutdown process keep failing.
From log:
LOG:  database system was interrupted at 2021-07-08 20:00:35 WIT
LOG:  checkpoint record is at 21/59607654
LOG:  redo record is at 21/59607654; undo record is at 0/0; shutdown TRUE
LOG:  next transaction ID: 0/127808448; next OID: 1355215
LOG:  next MultiXactId: 1; next MultiXactOffset: 0
LOG:  database system was not properly shut down; automatic recovery in progress
LOG:  record with zero length at 21/5960769C
LOG:  redo is not required
LOG:  database system is ready
LOG:  background writer process (PID 27107) was terminated by signal 9
LOG:  terminating any other active server processes
LOG:  all server processes terminated; reinitializing
LOG:  received smart shutdown request
LOG:  database system was interrupted at 2021-07-08 21:47:51 WIT
LOG:  checkpoint record is at 21/5960769C
LOG:  redo record is at 21/5960769C; undo record is at 0/0; shutdown TRUE
LOG:  next transaction ID: 0/127808448; next OID: 1355215
LOG:  next MultiXactId: 1; next MultiXactOffset: 0
LOG:  database system was not properly shut down; automatic recovery in progress
LOG:  record with zero length at 21/596076E4
LOG:  redo is not required
LOG:  database system is ready
LOG:  shutting down
LOG:  database system is shut down
LOG:  database system was shut down at 2021-07-08 21:48:09 WIT
LOG:  checkpoint record is at 21/5960772C
LOG:  redo record is at 21/5960772C; undo record is at 0/0; shutdown TRUE
LOG:  next transaction ID: 0/127808448; next OID: 1355215
LOG:  next MultiXactId: 1; next MultiXactOffset: 0
LOG:  database system is ready
It seems have autostart process but I can't find it.