I followed the steps successfully getting all files copied

I followed the steps successfully getting all files copied from our db to the 16 db's & global.

However when I visit the site it shows a database error - "We were able to connect to the database server (which means your username and password is okay) but not able to select the DBNAME_global database.
-Are you sure it exists?"

My question is when I look at the MySQL that DB is defintely there with data inside...so what's the catch? It can connect to Mysql however the global db doesn't seem to work properly....

Any advice would be appreciated