OBIEE 11.1.1.9 - Error ADF_FACES-60097

OBIEE 11.1.1.9 - Error ADF_FACES-60097:For more information, please see the server's error log for an entry beginning with: ADF_FACES-60096:Server Exception during PPR, #3

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Root cause could be when one of the file system got 100% full resulted in logins.
Which resulted in
1) ldap folder corruption (had to restore for logins to work)
2) ADF issue caused by zero byte for few users like
Sol : remove the file instance.jspx.xml and ask user to try again (did not stop/start appl) and it worked.
/lv01/apps/oracle/product/Middleware/user_projects/domains/bifoundation_domain/
sysman/mds/partition1/ai/bi/mdssys/cust/user/<username>
oracle:<servername>:ls -ltr
total 0
-rw-r----- 1 oracle dba 0 Aug 12 22:36 instance.jspx.xml
Also set up cleaning job like below in cron.


########################
# Clearing old logs
#######################
05 00 * * * /usr/bin/find /lv01/apps/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/AdminServer/logs -type f -mtime +5 -exec rm -f -- '{}' \;
15 00 * * * /usr/bin/find /lv01/apps/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/bi_server1/logs -type f -mtime +5 -exec rm -f -- '{}' \;