OVO Server can NOT start

Problems：
The pmd.log | trc files shows(which is in the directory /var/opt/OV/share/log)

proto name SNMP
proto name CMIP
proto name ACSE
proto name PEI
L ERROR            OPI:00                                   0001:0000
00000002:00000000 Apr 20 15:19:46        pm_loadable.c     :782
      |             PM_ER_STACKINIT
      |             shl_load failed
L ERROR            OPI:00                                   0001:0000
00000002:00000000 Apr 20 15:19:46        pm_loadable.c     :787
      |             PM_ER_STACKINIT
      |             /etc/opt/OV/share/conf/stacks/pmd/libECSS.sl
The shared library libECSS.sl has failed to load.
Fatal configuration error, configuration will terminate.
L DISASTER         OPI:00                                   0000:0000
00000000:00000000 Apr 20 15:19:46        pm_init.c         :629
      |             PM_NO_ERROR
      |             Could not create the stack table

Resolution:
Problem solved! Thank you very much for your help on this. Here is what I did:

1) I checked for the ECS sockets and counldn't find the socket file
2) I started check for the all the library files you listed and found that
/opt/OV/nonOV/perl/a/lib/5.6.1/PA-RISC2.0-thread-multi/CORE/libovperl.sl
was missing on the system
3) I re-installed the OVO Agent, which installs the ovperl package
4) ovstop, ovc -kill
5) moved the ECSS.cfg file back to /etc/opt/OV/share/conf/stacks/pmd directory
6) ran ovstart; ovc -start and all services started up correctly.

I am not sure what happened exactly, but the system is now fixed and I am happy
:-)