Error saving: Wrong parameter value '"mysql' for parameter replicate-ignore-dbDatabase names in filter value shouldn't exceed 64 symbols

Dear Customer,

I understand that you want to set the parameters 'replicate-ignore-db' to 'mysql' in order to ignore the 'mysql' system database in AWS RDS instance running database MySql version 5.7. However when attempting to set the parameters an error occurs stating the following:

Error saving: Wrong parameter value 'mysql' for parameter replicate-ignore-dbDatabase names in filter value shouldn't exceed 64 symbols. Supported characters includes all ASCII alphanumeric characters, _, $ and U+0080 .. U+FFFF unquoted or any characters in quotes (excluding commas). (Service: AmazonRDS; Status Code: 400; Error Code: InvalidParameterValue; Request ID: 9ffd2357-2d96-4870-8476-07c886220cd7; Proxy: null)

The above error indicates that it is not possible to set 'replicate-ignore-db' to ignore the 'mysql' system database. This is because RDS makes use of certain 'mysql' system database tables for monitoring and architectural purposes. It is thus currently not possible to set the 'replicate-ignore-db' parameter to ignore the 'mysql' system database in AWS RDS.

I hope the above provided information is clear and helpful.