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Description of problem:

While moving a tomcat installation from a native Apache Tomcat 7 install to a RHEL7 provided Tomcat 7 install, startup fails as follows:

Sep 14 20:57:28 test server: Sep 14, 2018 8:57:28 PM org.apache.catalina.core.NamingContextListener addResource
Sep 14 20:57:28 test server: WARNING: Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory]
Sep 14 20:57:28 test server: Sep 14, 2018 8:57:28 PM org.apache.catalina.mbeans.GlobalResourcesLifecycleListener createMBeans
Sep 14 20:57:28 test server: SEVERE: Exception processing Global JNDI Resources
Sep 14 20:57:28 test server: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory]

This appears to be because tomcat-dbcp.jar was arbitrarily removed from the RHEL7 packaged version of tomcat.

This was reported 6 years ago, but closed without a clear explanation: https://bugzilla.redhat.com/show_bug.cgi?id=819087

Version-Release number of selected component (if applicable):

tomcat-7.0.76-6.el7.noarch

*** Bug 1771523 has been marked as a duplicate of this bug. ***

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: tomcat security and bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:4004