Issue solved.
Below were the logs for reposerver.
Looks like reposerver lost the connection. Restart of reposerver led to correcting this problem.
2009-08-14 16:50:49 EDT [ISC.0067.9999D] Cluster Database Exception => [wm-cjdbc33-0069][Oracle JDBC Driver]No more data available to read. 08006
2009-08-14 16:52:20 EDT [ISC.0067.9999D] Cluster Database Exception => [wm-cjdbc33-0069][Oracle JDBC Driver]Broken pipe 08S01
#webMethods#Integration-Server-and-ESB#webMethods-Archive