When opening Database Monitor, the process was terminated. According to the trace and event log, problem was caused by McAfee.
Here is the exception:
Exception:
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2.1 Date : Mon, 10 Jan 2011 10:03:30 -0500
2.2 Address : 004EAA17
2.3 Module Name : Toad.exe - (Toad for Oracle)
2.4 Module Version: 10.6.1.3
2.5 Type : EOutOfResources
2.6 Message : Cannot create shell notification icon.
2.7 ID : C68F
2.8 Count : 1
2.9 Status : New
2.10 Note :
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Below is the event log information, it happened every few minutes:
A thread in process C:\Program Files\McAfee\VirusScan Enterprise\Mcshield.exe took longer than 60000 ms to complete a request.
The process will be terminated. Thread id : 5252 (0x1484)
Thread address : 0x1205C0F1
Thread message :
Build VSCORE.14.1.0.524 / 5400.1158
Object being scanned = \Device\HarddiskVolume1\Program Files\Quest Software\Toad for Oracle 10.6\Toad.exe
by C:\WINDOWS\Explorer.EXE