SCOM Custom Alert for Mirroring

Hi,

I am working on creating custom alert for Mirror MSSQL servers based on the simple SQL query  output of which is a count of the databases out of sync.

My Scom Version  : I have SCOM 2012.

Problem : I have Mirroring MP Installed for database Mirroring monitoring but the Drawback of the same is,  it is creating alert for each database which have mirroring configured on it.

I have some MSSQL Instances where I am having more than 100 databases. In this case due to any XYZ reason , mirroring is getting disturb in this case I am getting 100 alerts and related Incident Tickets.

To avoid the same , I am Thinking of the Instance based alerting which will only create one incident for one Instance and shows only count of the databases which are out of sync.

For this I have started  googling and followed solutions given in the below links

https://blog.tyang.org/2012/01/05/scom-mp-authoring-example-generate-alerts-based-on-entries-from-sql-database-part-2-of-2/

No Script found in above link.

http://www.sqlservercentral.com/articles/Operations+Manager/63041/

Issues while mapping Parameters.

Do any body have solution for the problem I have mentioned above.

I just want to monitor my MSSQL Mirroring databases from SCOM but alert should be Instance level not individual database level.

Please let me know any solution for this.

Thanks!

Sameer