Max memory size of timesten database

Hi all
I wanna create a database of 2G-size in timesten.The permanent size is set 1536MB and Temporary Data Size is 512MB.
Following errors occur when connecting.
+837:Cannot attach data store shared-memory segment, error 8+
+703:Subdaemon connect to data store failed with error TT837+
The command failed.
Then I find that the max permanent size is up to 944MB when connecting susscefully.
In addition,the environment is win2003 sever enterprise sp2 32bit, timesten 11.2.1 32bit and 4G memory.
Thanks a lot!

Unfortunately, 32-bit Windows is one of the most limited environments for TimesTen due to the way that Windows manages the process memory map for attached DLLs leading to a very fragmented process memory map.
Note that TimesTen needs to be able to allocate a shared mapping from the paging file of size (PermSize + TempSize + LogBufMB + ~20 MB) and this needs to be able to mapped as a contiguous segment into the address space of all processes connecting in direct mode (such as the sub-daemon).
With PermSize = 944 MB, TempSize = 512 MB and assuming you are using the default of 64 MB for LogBufMB then the total memory requirements for this datastore are ~1540 MB which is pretty much the largest that is likely to be possible on 32-bit Windows. If you need more permSize you should consider reducing te,pSize to compensate. Do not reduce LogBufMB. The default of 64 MB is only suitable for read-mostly applications; if your workload will include a significant percentage of insert/update/delete then you may even need to increase it to get optimal performance.
Note also that even if you mange to load a datastroe that is close to the limit, applications may have problems connecting in direct mode if the application uses a lot of DLLs, or i it is Java with a large heap etc.
Unfortunately, 32-bit Windows is not a great platform in this respect. 64-bit Windows is far superior (when coupled with 64-bit TimesTen) and you do not face these issues due to the mush larger process address space.
Chris

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KEEP buffer cache                                                           0          0          0                   0
RECYCLE buffer cache                                                        0          0          0                   0
DEFAULT 2K buffer cache                                                     0          0          0                   0
DEFAULT 4K buffer cache                                                     0          0          0                   0
DEFAULT 8K buffer cache                                                     0          0          0                   0
DEFAULT 16K buffer cache                                                    0          0          0                   0
DEFAULT 32K buffer cache                                                    0          0          0                   0
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