OBIEE 11g : Presentation Server state is NONE

Recently i had an issue starting the Presentation Services in OBIEE 11g. Where the status is NONE. I tried restart of all OPMN components as well was presentation service alone but all my efforts went  in vain. Then i started looking at the sawlog and found something very annoying.

[OBIPS] [INCIDENT_ERROR:1] [] [saw.webextensionbase.init] [ecid: ] [tid: ] Invalid item /system/mktgcache/sawguidstate.[[

File:catalogimpl.cpp

the error is now where related to what i do and moreover i haven't made any changes to the configuration or any other thing in OBIEE. Then i started looking close at the error which states that the initialization is not happening. Then i realized the last time the system has been turned off without shutting down the services which has left the saw server in non responsive state. the error says the file sawguidstate id invalid.

So lets delete this file and .atr related to this and start the presentation service.

Below is the location of files

[INSTANCE_HOME]\bifoundation/bifoundation\OracleBIPresentationServicesComponent\coreapplication_obips1\catalog\SampleAppLite\root\system\mktgcache

delete both sawguidstate  and sawguidstate.atr , if you don't want to delete them take a back up under this folder.

[INSTANCE_HOME]\bifoundation/bifoundation\OracleBIPresentationServicesComponent\coreapplication_obips1\catalog\SampleAppLite\root\system\mktgcache\{hostname}

Now start the Presentation server using the below statement

opmnctl startproc ias-component=coreapplication_obips1

Hope this resolves your error anything otherwise contact me.

Have a Good Day !!!!!