Setting the catalog location from Server Explorer

Note: Setting this option overrides the MFSYSCAT environment variable.

In Server Explorer, expand localhost.
Note: If Server Explorer is not already displayed, click Window > Show View > Server Explorer.
Expand the enterprise server that contains the local catalog.
Right-click Catalog, then click Set Catalog Location.
The Choose Enterprise Server System Catalog File dialog box appears.
Select the required catalog.dat, then click Open.
The catalog location is updated.

The location of the catalog is shown in the Properties tab.