This is the first time I have posted a question to Expert's Exchange, so I hope I get it right for all the long time experts out there.
I have run into an Oracle problem that I can't seem to find an explainantion for. On a random day on a random Oracle data file I get an access denied error when the database starts up. This database has been in production for the last 10 years and the only time I have seen these errors is when our Backup software or Antivirus software has locked the file for its use.
To give a bit of background to the Oracle instance,
Oracle 126.96.36.199.0 Enterprise Edition
Windows 2003 Standard R2 SP2
4GB of RAM (Windows is configured with /3GB switch to allow more memory to the Oracle process)
Hard disks are connected via an EMC SAN and data files are spread across the SAN to try and best accomodate disk I/O
There haven't been any major changes to the system in the past 2 weeks (the period in which the problem has started to occur)
The only recent change has been to a couple of the disk drives as we added space and moved a couple data files around (these files have never been reported as a problem)
General history of changes are
Monthly Windows Updates
Daily updates to McAfee antivirus
Monthly reboot of the Windows Server
I have attached a few trace files and the an portion of the Oracle alert log. I am all out of ideas as I can't think of any other items that would be causing an Access Denied error for Oracle. The backs have been modified such that they don't touch the database drives and the same is true for antivirus, there is a policy implemented not to scan the drives with the database files located on them.
If anyone has other ideas it would greatly appreciated if you shared them.