Last updated: before December, 1998
First, careful read through the article 'Optimizing the speed of a database' for tips on how to get you database running as sleek as possible.
Also, remove anything that might be unnecessarily using memory, such as unused forms, worksheets, reports, macros that are no longer needed.
Check the manuals for your operating system to make sure your system configuration is making optimum of your memory. For instance, if you are using MS-Windows 3.1 and DOS, check that your EMM386 (probably should be set to NOEMS), and Upper Memory Blocks (UMB) are properly configured and utilized.