DOS/16M: Error message [6] Not enough memory loading INFORMIX-SE 4.10.DD6 engine.

Question

INFORMIX-SE 4.10.DD6 on DOS 6.22 ((DOS16M=3):

I'm trying to run a protected mode Informix-SE engine executable but im getting the error message described in the title of this post. DEVICE=C:\DOS\HIMEM.SYS is the first entry in my CONFIG.SYS and MEM.EXE says I have 616K of REAL MEM available. I'm using using DOS16M switch = 3 and the executable is only 546K size.

Answer 1

Resolved the problem myself. Used /INT15=8192 option with HIMEM.SYS to force extended memory manager to pre-allocate 8MB of extended memory using hardware interrupt 15h versus XMS specification method. ISQL 4.10.DD6's target OS was for DOS 5.0 and I am using DOS 6.22, in which HIMEM.SYS 3.0 uses XMS specifications for managing extended memory.