From the above exceptions, It appears that the configuration file "\SOI\jsw\conf\SAM-IntegrationServices.conf" was corrupt as many class path libraries are missing in this file (after line 69). It should have Spectrum library but as we could see here, it has only few classpath libraries.
<Please see attached file for image>

It should have like as shown below...
<Please see attached file for image>

Follow these steps to address this problem...
1) Stop "CA SAM | SOI Integration & Event Management" services
2) Move \SOI\jsw\conf\SAM-IntegrationServices.conf file to a temp folder
3) Copy \SOI\jsw\conf\
pre-upgrade\SAM-IntegrationServices.conf to \SOI\jsw\conf folder or copy this from a working connector file
4) Start connector services