We have started experiencing this error in the last few weeks and are trying to identify the cause. We opened a ticket with Oracle and one with HP (SAN).I just checked the logs from the web servers and found this ORA-01115 error was logged by the web application 6 times yesterday between 2:49 and 3:10 PM. We're not sure if it's both nodes or just one. The last time it had been logged previously was 12/22/05. Four of those times, it was the same file that our batch process had a problem with -- PARTIES_DATA01.dbf. On the other 2 occasions, it was PARTIES_DATA02.dbf and LOCATION_DATA01.dbf.
HP says the SAN is healthy, Windows hasn't logged any issues, and Oracle says it isn't their problem. If anyone has a suggestion for diagnosing this, I'm all ears.
ORA-01115 IO error reading block from file string (block # string)
Cause: The device on which the file resides is probably off line.
Action: Restore access to the device, then retry the operation.
Database Administrator 1
Bureau of Information Technology
Pennsylvania Department of Health