OIM-AD Communication Fails After the Upgrade

After the upgrade to 12c (12.2.1.3.0), the OIM-AD communication fails because the upgrade to 12c (12.2.1.3.0) changes the trust key to DemoTrust.

The following error messages is displayed:

< org.identityconnectors.framework.common.exceptions.ConnectorException: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  at org.identityconnectors.framework.common.exceptions.ConnectorException.wrap(ConnectorException.java:101)
  at org.identityconnectors.framework.impl.api.remote.RemoteFrameworkConnection.(RemoteFrameworkConnection.java:54)
  at org.identityconnectors.framework.impl.api.remote.RemoteConnectorInfoManagerImpl.(RemoteConnectorInfoManagerImpl.java:50)
  at org.identityconnectors.framework.impl.api.ConnectorInfoManagerFactoryImpl.getRemoteManager(ConnectorInfoManagerFactoryImpl.java:94)
  at oracle.iam.connectors.icfcommon.ConnectorFactory.getRemoteConnectorInfoManager(ConnectorFactory.java:250)
  at oracle.iam.connectors.icfcommon.Co

To resolve this issue, search the files in the $DOMAIN_HOME/bin directory for DemoTrust, back up the files that have DemoTrust in them, and then replace all occurrences of DemoTrust with the name of the custom truststore.