Receiving 'System Error' page when trying to access the Options->Administration page in the TSIM Operations Console.
You may also see org.apache.jsp.jsp.SystemAdministration_jsp._jspService specified in the Details of the exception.
 

This can occur if the BMC_PROACTIVENET_HOME variable is not properly set down to the pw directory of your TSIM installation, i.e. C:\Program Files\BMC Software\TrueSight\pw.  If it is set to just the TrueSight subdirectoy, i.e. C:\Program Files\BMC Software\TrueSight, this problem will occur.  One reason that the variable could be set incorrectly is if the Admin console was installed separately on the same system, after TSIM was installed (this does not need to be done, as TSIM includes the Admin Console).

To fix this modify the system BMC_PROACTIVENET_HOME back to the pw directory (i.e. C:\Program Files\BMC Software\TrueSight\pw), then restart TSIM.

For Unix:
# echo $BMC_PROACTIVENET_HOME

Also check to make sure the link in /usr for pw points to the correct location.

For example:
# ls -al /usr/pw
lrwxrwxrwx 1 root root 23 Aug 24 07:02 /usr/pw -> /data1/bmc/TrueSight/pw

Ensure the entry for $BMC_PROACTIVENET_HOME is correct in /etc/bmc.profile

Note that you can also experience the System Error symptom if the jserver cache is corrupt.  To fix that, restart the TSIM:
pw system start

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Another possible cause is having isAppendBPPMName=yes set in the IBRSD.conf.  You can either comment that parameter, or set it to No to resolve this symptom.