System Inaccessible After Field Addition to a Database Table

Scenarios

After a field was added to a database table, the system becomes inaccessible.

Solution

The database performance is affected due to the addition of table fields. A possible reason is that indexes are not added to the new table fields. As a result, a large amount of data consumes a large number of CPU resources. You are advised to:

• Add indexes and primary keys.
• Optimize slow SQL statements.