How to fix the Oracle error TNS-12168: TNS:Unable to contact LDAP Directory Server?

In this post, you’ll learn more about the Oracle ErrorTNS-12168: TNS:Unable to contact LDAP Directory Server with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12168: TNS:Unable to contact LDAP Directory Server

Reason for the Error TNS-12168: TNS:Unable to contact LDAP Directory Server

Cause: Cannot contact LDAP directory server to get Oracle Net configuration.

How to fix the Error TNS-12168: TNS:Unable to contact LDAP Directory Server ?

You can fix this error in Oracle by following the below steps

Action: Verify that the directory server is up and accessible from the network. Verify that directory access configuration is correct. For more information see the Oracle Internet Directory Administrators Guide or the Oracle Net Administrators Guide.