Issue with service getArchiveInfo

java.sql.SQLException: [wm-cjdbc36-0039][Oracle JDBC Driver][Oracle]ORA-01555: snapshot too old: rollback segment number 10 with name “_SYSSMU10$” too small at com.wm.monitor.app.Archive.getArchiveInfo

The service getArchiveInfo in WmMonitor package throws this error for different segments – sometimes 33, 36, 96. But sometimes it runs fine. There are no inputs for this service. It is a webMethods built-in service. Why would that happen?

Thanks

Sounds like more of an oracle issue:
http://www.dba-oracle.com/t_ora_01555_snapshot_old.htm

regards,
Nathan Lee