Know Current APPS Current Versions.

1)select product_version,patch_level from fnd_product_installations
Get current version ana Patch level information.
2)select * FROM V$VERSION
Database Version infomation.
3)select * from v$instance
Instance details
4)select WF_EVENT_XML.XMLVersion() XML_VERSION from sys.dual;
Current XML Parser Version info.
5)select TEXT from WF_RESOURCES where TYPE = 'WFTKN' and NAME = 'WF_VERSION'
Workflow version Number.
6)select home_url from icx_parameters
Oracle applications front end URL
7)SELECT VALUE FROM V$PARAMETER WHERE NAME=’USER_DUMP_DEST’
Get the Trace file location.
8) XML Publisher Vesion info.
$OA_JAVA/oracle/apps/xdo/common/MetaInfo.class.