Help with Harweb Installation

Document ID : KB000124274
Last Modified Date : 09/01/2019
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I have new instance of Harweb to install on WIndow 2016 server. I have installed R13.0.3 workbench, Tomcat 7 and Harweb. I am getting error 500, can't get hDB from pool error message. I have compared all that i can think of to system running Windows 2008 and can't find differences that should matter (database hostname, SID, etc are different).
Windows Server 2008
CA Harvest SCM v13.0.3
Tomcat v7
JDK v 7
Oracle V12.x (jdbc jar file only)
We found that he had installed 32-bit Tomcat and 32-bit Java, but 64-bit SCM Client.  All components must be at the same bit level.
Uninstalled 64-bit SCM Client and installed 32-bit SCM Client.  This resolved the problem.