Learn the cause and how to get to the bottom of 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 need to be num to mount this database now not num
Cause
You tried to start a database whose DB_BLOCK_SIZE parameter cost in the initialization file does now not match the price used when the database was once created.
Resolution
The option(s) to resolve this Oracle error are:
Option #1
Make positive that you are mounting the right database.
Option #2
Make positive that you are the use of the right initialization file.
Option #3
You might also need to trade the DB_BLOCK_SIZE parameter in the initialization file.