To support access to 2GB of memory, use isql to set the starting virtual memory address with sp_configure, for example:
sp_configure "shared memory starting address", 23662592
Restart your computer to put the new value into effect.
Do not set Monitor Server to use most of the available virtual address space. This access may limit Monitor Server functionality.
For more information about shared memory, see the Adaptive Server Enterprise Installation Guide for Windows NT.