After installing all required software for a new Business Connect environment,  high CPU usage spikes are observed, on the server.  On investigation, three scripts running in the background, owned by TIBCO that seem to have been started by installers but never closed. These installer scripts were found to be causing the spikes.

The PID information for these scripts look like this on the Linux server:
<<<
tibco 4083 1 28 Oct01 ? 1-22:29:49 /bin/sh /tmp/ismp002/9301474.tmp
tibco 24803 1 25 Oct03 ? 1-06:41:32 /bin/sh /tmp/ismp002/5350548.tmp
tibco 37931 1 29 Oct01 ? 2-00:35:56 /bin/sh /tmp/ismp002/8065627.tmp
>>

What can we do about it?

Linux: Red Hat 7.4

TIBCOUniversalInstaller process usually ends after finishing an installation. But if for some reason installation gets stuck or frozen, users manually end the process. Also the .tmp files created during installation gets cleanup automatically after installation.

If we refer to the installation log files from the installation, we can look for the following lines :
<<<
::INFO::, removing temp file: <your file names like above>
>>>

These temp files may be left behind in the older versions of TIBCOUniversalInstaller.
These temp files can be deleted (if they exist) or processes can be killed without any issues.

After running TIBCO's product installer, spikes of heavy CPU usage are observered, even when no TIBCO applications are running.

installation, TIBCOUniversalInstaller , temp files, CPU spike