IBM Support

IBM Rational ClearQuest and Windows 64-bit operating systems

Troubleshooting


Problem

The ClearQuest Web client v7.0.1 and CQ Eclipse clients v7.0.1 and later might fail when used on a Windows 64-bit operating system. The failure can occur because the Java Virtual Machine (JVM) on 64-bit Windows operating system enables the large address space for an application, giving the application more than the default 2 GB of user memory. Starting in v7.1, the ClearQuest Web server architecture has changed such that this issue no longer exists for the ClearQuest Web client. However, the issue still exists in CQ Eclipse clients v7.1 and later, including the Designer.

Symptom

When the ClearQuest Web client v7.0.1 and the ClearQuest Eclipse clients v7.0.1 and later are running on a Windows 64-bit operating system, the JVM detects the presence of a 64-bit operating system and enables the LARGEADDRESSAWARE bit in the application. This bit causes the ClearQuest Web client v7.0.1 to see up to 7 terabytes (TB) of memory. ClearQuest Web client and CQ Eclipse clients are not designed to run with more than 2 GB of memory. Running with more than 2 GB of memory can result in random memory and pointer manipulation failures.

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Document Information

Modified date:
29 September 2018

UID

swg21330262

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