Oacore Service Hanging at Startup

I started the application services in ebstest instance and when i check the status oafm & oacore is services hanging.I thought as the state is (Init) it will change after sometime but It did not change the state I have waited till one hour and the state is same.
After doing lot of research I found a hit in metalink and it resolved the issue.

Oacore Service Hanging at Startup [ID 1298003.1]

Before
=====
$ adopmnctl.sh status

You are running adopmnctl.sh version 120.6.12010000.5

Checking status of OPMN managed processes...
Processes in Instance: ebstest_apptest.apptest.user.com
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
OC4JGroup:default_group | OC4J:oafm | 8015 | Init
OC4JGroup:default_group | OC4J:forms | 7171 | Alive
OC4JGroup:default_group | OC4J:oacore | 3276 | Init
HTTP_Server | HTTP_Server | 2942 | Alive

Casue: This issue may occur after an OS crash, reboot or services restart.
If file $COMMON_TOP/cacheLock file exists before oacore service is started, the above thread will be locked and the oacore service will hang until timed out.

Solution:
Remove $COMMON_TOP/cacheLock file which is a 0 bytes file created at startup time.

1)stop application services make sure no process are running.
2)go to common top

cd $COMMON_TOP
$ mv cacheLock cacheLock_bkp

3)started the application services and when I checked the status,it was started successfully and no more issues.Below are the details.

$ adopmnctl.sh status

You are running adopmnctl.sh version 120.6.12010000.5

Checking status of OPMN managed processes...

Processes in Instance: ebstest_apptest.apptest.user.com
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
OC4JGroup:default_group | OC4J:oafm | 27257 | Alive
OC4JGroup:default_group | OC4J:forms | 26249 | Alive
OC4JGroup:default_group | OC4J:oacore | 24769 | Alive
HTTP_Server | HTTP_Server | 24447 | Alive


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