Oracle / PLSQL: ORA-00058 Error Message

Learn the cause and how to resolve the ORA-00058 error message in Oracle.

Description

When you encounter an ORA-00058 error, the following error message will appear:

• ORA-00058: DB_BLOCK_SIZE must be num to mount this database not num

Cause

You tried to start a database whose DB_BLOCK_SIZE parameter value in the initialization file does not match the value used when the database was created.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

Make sure that you are mounting the correct database.

Option #2

Make sure that you are using the correct initialization file.

Option #3

You may need to change the DB_BLOCK_SIZE parameter in the initialization file.