How to fix the Oracle error PLS-00315: Implementation restriction: unsupported table index type?

In this post, you’ll learn more about the Oracle ErrorPLS-00315: Implementation restriction: unsupported table index type with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00315: Implementation restriction: unsupported table index type

Reason for the Error PLS-00315: Implementation restriction: unsupported table index type

In the INDEX BY clause of a PL/SQL table declaration, a datatype other than BINARY_INTEGER, PLS_INTEGER, or VARCHAR2 was specified. PL/SQL tables can have one column and a primary key. The column can have any scalar type, but the primary key must be either a binary integer type or VARCHAR2.

How to fix the Error PLS-00315: Implementation restriction: unsupported table index type ?

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

Use one of the supported key types in the INDEX BY clause.