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Case Number: 11068185
Open Date: 2004-08-31 17:34:59.7
Version/EBF: 1250/0
Product: Adaptive Server Enterprise
OS: Windows NT
Platform: PC Windows NT



Case Description

Trying to start ASE on a windows system with 4gb of RAM. Server will not start when the data cache is increased. What is the maximum data cache that can be used under 12.5.0.3?

Tip or Workaround

Here is some information on how to make Windows allow ASE get 2.7gb



By default Windows only allows 2GB for apllications to use so ASE is limited to 2GB. Using a Windows flag in the boot.ini file you can get up to 3GB for applications to use. Keep in mind that there is some overhead is assigning the actual memory so you won't get a true 3GB. You will be able to use about 2.7GB. Here are links to Microsoft articles on the topic:







http://support.microsoft.com/support/kb/articles/Q268/3/63.ASP



http://support.microsoft.com/support/kb/articles/Q283/0/37.ASP



http://support.microsoft.com/support/kb/articles/Q291/9/88.ASP







/3GB info:



http://support.microsoft.com/support/kb/articles/Q171/7/93.ASP







This flag is limited to only certain versions of Windows. To use this flag there are a few changes you must make inside of ASE. They are as follows:







- add /3gb flag to Windows boot.ini file



- adjust "shared memory starting address" to 23662592



- adjust "allocate shared memory" to 1



- adjust "max memory" to 1408000 (~2.7GB)



- reboot Windows