Unable to authenticate session in Oracle apps R12 : Login Issue

-Clear the Browser cache.-Stop all Browser sessions.
-Start a new Browser session and logon to the Instance.

If not resolved

Check if the APPS_TS_ARCHIVE Tablespace is full.

If not resolved

Have tried clearing the cache (_pages). Have tried recompiling jsps and bouncing however the problem still persists.
Cleared all the Apache and related logs Bounce the Apache Web Server. In order to do so, run the following scripts:
1. adapcctl.sh stop
2. adapcctl.sh start

If not resolved

bring down services of application then complile jsps
cd $FND_TOP/patch/115/bin
perl ojspCompile.pl --compile --flush -p 2
Run autoconfig on both db and apps tiers
Bring up the services and test login
Cleared internet cache(browser cache)..