Help Center> Relational Database Service> Troubleshooting> RDS for MySQL> Performance Issues> System Inaccessible After Field Addition to an RDS for MySQL Database Table

Updated on 2022-12-05 GMT+08:00

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System Inaccessible After Field Addition to an RDS for MySQL Database Table

Description

After a field was added to an RDS for MySQL 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.

Parent topic: Performance Issues

Previous topic: Native Error 1461 Reported by an RDS for MySQL DB Instance

Next topic: Storage Filled Up by Undo Logs Due to Long Transactions

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