MS Access 2010: “Cannot open any more databases.”

Question

While struggling with a single legacy MS Access application I faced this weird error:

Cannot open any more databases.

The application makes

Answer 1

Your application is trying to open too many connections to the Access database. Its not just the tables in your sql statement that add up to 2048, even the forms, reports, comboboxes, unclosed recordsets etc add up to the number of connections used by your application. Few things you can try out here:
1. Close the resources (eg record sets) which you are not really using.
2. If you are making use of domain aggergate functions( eg DLookup), change it with Elookup as it explicitly cleans up after itself.
3. You can modify your sql code to make use of Temp Tables.
Hope it helps.