Don't find any errors in server.log .Except the below info message.
10:30:58,868 INFO [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) JBAS015009: Scan found incompletely copied file content for deployment /appl/CTS/jboss/deployments/TaxPortal.war. Deployment changes will not be processed until all content is complete.
Appliation's deployed in /deployments
-rw-r--r-- 1 jboss finadm 46671561 Sep 6 08:34 GCRT.war
-rw-r--r-- 1 jboss finadm 0 Oct 10 10:30 TaxPortal.war
-rw-rw-r-- 1 jboss finadm 8 Oct 10 10:30 GCRT.war.dodeploy
-rw-rw-r-- 1 jboss finadm 13 Oct 10 10:30 TaxPortal.war.pending <-- recently deployed applcaiton
-rw-rw-r-- 1 jboss finadm 8 Oct 10 10:30 GCRT.war.pending
But this application is shown in pending state, not deployed making the other existing war application also not getting deployed..
I have found the recently copied WAR file copied is having an issue(incomplete war file), failing the existing war file, so removing the faulty war file solved the issue..