MySQL db error - SQLException while getting database connect

I tried to move the Opmanager to use an external pre-existing MySQL db. I edited the database_params.conf and get this error:

inside addon check
SQLException while getting database connection. Check if database daemon is running
java.sql.SQLException: Server configuration denies access to data source
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:519)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1731)
at com.mysql.jdbc.Connection.<init>(Connection.java:559)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:358)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at jdbc.CreateSchema.instantiateConnection(CreateSchema.java:146)
at jdbc.CreateSchema.init(CreateSchema.java:84)
at com.adventnet.nms.startnms.NmsMainBE.main(NmsMainBE.java:343)
at com.adventnet.me.opmanager.server.OpManagerMainBE.main(OpManagerMainBE.java:80)
Exiting OpManager

I can confirm using MySQL admin the address, username, and password supplied are all correct. What could be causing this?