Do you connect to a catalog database on a different server ?
A "read timed out" does seem like an I/O timeout -- e.g. timeout when reading the controlfile / snapshot controlfile or a datafile. Is the database actively doing I/O against all the files without error/timeout ?
Hemant K Chitale
All jobs same issue?
What is OEM version?
Can you "create like" any job and then try running that job "immediately" and see what it returns.
Did you check OEM log files?
In NETAPP we faced same kind of issue. By that time we increased CLIENT_READ_TIMEOUT to 3600 in /usr/openv/netbackup/bp.conf file. Then issue got fixed.
Please check with support any parameter need to be modified in Enterprise manager confg file.
Are you backing up on disk storage or tape ? Do use netbackup software ?
Have you checked on other backups running during the same time and how much storage space you have.
Kent D. Sorber, OCP