We have a Dell PowerEdge 1950 running Windows Server 2003 Enterprise. It has dual quad core 3 Ghz intel porcessors with 32 GB RAM. It is running VMWare Virtual Center Server using Oracle as the database. Every morning between 4 AM and 4:15 AM the DBA has RMAN backup running and will receive the following error:
Errors in file c:\oracle\product\10.2.0\admin\vmw\udump\vmw_ora_5912.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [unable_to_trans_pc] [PC:0xE93E370] [ADDR:0xE93E370] [UNABLE_TO_WRITE] 
Oracle says this is due to memory issues where either the memory is bad or there is not enough.
The system properties recognizes that there is 32 GB of RAM but task manager tells me that there is 30 GB of physical memory available but WinMSD says there is only 1.75 GB of available physical memory. The boot.ini files is as follows:
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Windows Server 2003, Enterprise" /NoExecute=OptOut /fastdetect /PAE
I added the /PAE switch even though the system recognized the memory without it.
I have downloaded Process Explorer to see if I could account for for the the slightly 1 + GB of physical memory that is seen in task Manager being in use but could not.
If anyone has any ideas as to what I can look at to try to solve the issue, I would appreciate it.