Core dump files are created when there is a serious problem, such as an exceptions or when an IBM Cognos 8 process terminates abnormally. Since core dump files are big and a new one is created each time the problem recurs, you may want to disable them. You can enable core dump files again if you encounter problems that require it.

If such a problem occurs, you receive the following error message: Report Server not responding. See the Troubleshooting section in the Administration and Security Guide immediately.

You may also want to delete any existing core dump files from the \bin directory of the IBM Cognos 8 server installation, if they are not required for troubleshooting purposes. In a Windows environment, core dump files have a .dmp extension and the file name processID.dmp, such as BIBusTKServerMain_seh_3524_3208.dmp. In a UNIX environment, the files are named core. In a Linux environment, the files are named core.processID.

In some IBM Cognos 8 hot site builds, core file creation is automatically enabled. The configuration file that controls this is different for IBM Cognos 8.1 MR1 and later versions of the product. During an upgrade, configuration settings are not overwritten.

Steps to Turn Off Core File Creation for IBM Cognos 8.1 MR1
1. On the server where IBM Cognos 8 is installed, open the rsvpproperties.xml file from the c8_location\configuration directory.
2. Change the Win32StructuredExceptionHandling property to 0 (zero) so that it reads
<property>Win32StructuredExceptionHandling</property><value type="long">0</value>
3.Save the file.

Steps to Turn Off Core File Creation for IBM Cognos 8.1 MR2 and Later Versions
1. On the server where IBM Cognos 8 is installed, open the cclWin32SEHConfig.xml file from the c8_location\configuration directory.
2. In the configuration element, change the value of the environment variable setting to 0 (zero) so that it reads
<env_var name="CCL_HWE_ABORT" value="0"/>
3. Save the file.