Unable to apply cumulative patch for OS 14.2

Products

• CA Identity Manager
• CA Identity Governance
• CA Identity Portal
• CA Identity Suite

Issue/Introduction

While applying latest OS patch i.e. CP-OS-140200-Latest.tar.gpg, in Identity Suite vApp we are getting below error:
[ERROR] No applicable RPMs were found
[ERROR] The CP installation failed with error #16
[ERROR] Failed installing Cumulative Patch "/tmp/CP-OS-140200-Latest.tar.gpg" - error code 16
[ERROR] The patch installation completed with error #16

IP logs shows, it has broken some of the hotfix. Attached is the IP logs.

2020-04-29 09:38:16,563 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) JBAS014613: Operation ("ad
d") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "CAIM_DB1")
]) - failure description: {
    "JBAS014771: Services with missing/unavailable dependencies" => [
        "jboss.data-source.java:jboss/datasources/jdbc/CAIM_DB1 is missing [jboss.jdbc-driver.db2]",
        "jboss.driver-demander.java:jboss/datasources/jdbc/CAIM_DB1 is missing [jboss.jdbc-driver.db2]"
    ],
    "JBAS014879: One or more services were unable to start due to one or more indirect dependencies not being available." => {
        "Services that were unable to start:" => [
            "jboss.data-source.reference-factory.CAIM_DB1",
            "jboss.naming.context.java.jboss.datasources.jdbc.CAIM_DB1"
        ],
        "Services that may be the cause:" => ["jboss.jdbc-driver.db2"]
    }
}

Environment

Release : 14.2

Component : CA IDENTITY SUITE (VIRTUAL APPLIANCE)

Resolution

What we in support have found is that sometimes the CPs do not take into account that HFs have been applied.

the first step in troubleshooting issues with applying CPs is to remove the HF.

In this customer's environment we had to remove the OS patch from 2018 to apply the CP released in 2020 Jan.