How to fix the Oracle error PRCD-01015: Combination of service cardinality {0} and TAF {1} is not allowed for service {2}?

In this post, you’ll learn more about the Oracle ErrorPRCD-01015: Combination of service cardinality {0} and TAF {1} is not allowed for service {2} with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PRCD-01015: Combination of service cardinality {0} and TAF {1} is not allowed for service {2}

Reason for the Error PRCD-01015: Combination of service cardinality {0} and TAF {1} is not allowed for service {2}

Cause: The specified service cardinality can not be used with the specified TAF policy.

How to fix the Error PRCD-01015: Combination of service cardinality {0} and TAF {1} is not allowed for service {2} ?

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

Action: Change the cardinality or find a matching TAF policy. PRECONNECT can only be used with SINGLETON cardinality.