Read the following articles for more information about Parameter Groups in RDS.
Parameter Groups in RDS.
Cannot modify the parameter group error in AWS RDS.
In a custom DB parameter group, parameter values can be changed. The parameter values in a default DB parameter group cannot be altered, though. Review the following frequent problems if you’re having trouble changing a DB parameter group’s value:
- You can encounter an issue if you try to adjust the configuration of an RDS DB instance using commands like SET.
- It’s possible that you are unable to alter the values of a default RDS DB parameter group if you are unable to update the DB instance configuration.
- It’s possible that not all changes are immediately implemented if you modified the parameter values but nothing has changed.
- If you are unable to edit any DB parameters, it may be because the parameter’s “Is Modifiable” property value is false.
- Even though the parameter variable is dynamically changeable, it cannot be changed because doing so would involve adding new configurations or settings to the current engine.
Big Data and SQL 