How to fix the Oracle error ORA-28507: error in data dictionary view string?

In this post, you’ll learn more about the Oracle ErrorORA-28507: error in data dictionary view string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-28507: error in data dictionary view string

Reason for the Error ORA-28507: error in data dictionary view string

The initialization parameter table for the Heterogeneous Services was not available, or its structure (number of columns or column types) was incorrect.

How to fix the Error ORA-28507: error in data dictionary view string ?

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

Verify correct installation of the following Heterogeneous Services’ initialization parameter views: HS_CLASS_INIT and HS_INST_INIT. If these views are not available, make sure you ran the script CATHS.SQL in the $ORACLE_HOME/rdbms/admin directory.