Subject: UniVerse and Backup Exec
Gwen,
We found the following Techtip (#1299) from Epicor to help with Backup Exec
and Universe.
It has to do with a registry setting to allow Universe and Backup Exec
to play nice on a Windows NT server, the same setting might work for a
Windows 2000
Server. I don't know if it will help with your problem or not.
Let me know off list how you like running Universe 10 and Windows 2000, we
are planning
the same upgrade later this year.
HTH,
Steve Moore
Amerex Corporation
[EMAIL PROTECTED]
Tech Tip #: 1299SDG Product: Ardent
Date Added: 2/12/01 Version: 5.1
Date Changed: 6/5/01 Module: UniData
Option:
Summary: Telnet sessions disconnecting/ Unable to connect
Detail: telnet sessions start dropping off when you get close to
the
user limit:
unidata admin on the server shows that the user session is still
ongoing and has to be killed manually
Applies to:
Windows NT servers running UniData and UniVerse.
Problem:
(1) Occurrences of the message: "User32.dll" or "Kernal32.dll
failure" at the server. This will cause the process that
generated
the error message to hang until an operator intervenes at the NT
console, resulting in client computers that fail to operate
correctly with no apparent cause,
(2) The NT server slows to a crawl with no other indications of
a
problem, or
(3) There is a problem logging in users to UniData or UniVerse
up to
the fully licensed limit.
(4) Telnet sessions start dropping off when you get close to the
user limit:
(5) Unidata admin on the server shows that the user session is
still
ongoing and has to be killed manually
(6) TNET.DLL failed to initialize
(7) TNET CLIENT/SITE licensing setup failed
Cause:
Services consume a small amount of memory each time they are
started. When multiple services log on as the same account the
system may not have enough memory to create a new desktop heap
(pre-allocated memory) for the service being started. Microsoft
has
confirmed this to be a problem in Windows NT version 4.0.
UniData
and UniVerse are then unable to allocate memory for new
sessions.
Background:
This problem was brought to our attention on systems running
Seagate
Backup Software. Seagate makes a change to a registry setting to
get
around User32.dll errors in Windows NT (per Seagate's attached
Tech
Note). Seagate obtained this information from Microsoft's
Knowledge
Base Article Q142676 (also attached). Ardent tech support
believes
that Microsoft's solution causes Kernal32.dll errors on servers
running UniData and/or UniVerse, so they recommend a different
solution.
The poor RDBMS performance and low number of users allowed to
login
is due to an insufficiently sized non-interactive heap.
Increasing
this setting has resulted in noticeably improved server
performance.
Solution:
The following solutions should be tried one at a time. After
each
fix, check the server to see if the problem has been corrected.
It
is strongly recommended to NOT apply every step at one time.
Make
only the minimum changes necessary to correct the problem.
Excessive
registry modifications may cause conflicts in other areas that
will
be very difficult to troubleshoot.
(1). Check the virtual memory setting, located in START |
Settings |
Control Panel | System. This opens the "System Properties"
applet.
Select the "Performance" tab. The Virtual Memory setting is
displayed and can be changed from here.
(2). Open the following registry key using REGEDIT or REGEDT32.
HKEY_LOCAL_MACHINE/System/CurentControlSet/Control/SessionManager/SubSystem/
Windows
The entire string will be similar to:
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows
SharedSection=1024,3072 Windows=On SubSystemType=Windows
ServerDll=basesrv,1
ServerDll=winsrv:UserServerDllInitialization,3
ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off
MaxRequestThreads=16
Look for the sub-string: SharedSection=XXX,YYY,ZZZ
XXX - is the size of the global heap in kilobytes.
YYY- is the size of the interactive desktop (system wide) heap
in
kilobytes.
ZZZ- is the size of the non-interactive (hidden) desktop heap in
kilobytes.
If ZZZ is increased then more objects can be created per
desktop.
This value is a Multi-String (edit it using Multi-String on the
Edit
menu).
The default value says 1024,3072. This should be changed to:
If the user is using SEAGATE change to 1024,3072,1024
If the user is not using SEAGATE change to 1024,3072,8192.
NOTE: Microsoft's solution is to change ZZZ to 512. This
occasionally results in Kernal32.dll errors. Epicor recommends
setting ZZZ to 8192.
Reboot to effect the change.
(3). Delete RegistrySizeLimit from
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control
(4). Set PagePoolSize to 0 at
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\Memory
Management.
(5). If the problem persists then try this step as a last
resort.
Open the registry key
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/Afd/Parameters
and add 4 new keys. Each key should be of type REG_DWORD:
Key Name Hex Value Decimal Value
InitialLargeBufferCount 0x1e 30
IrpStackSize 0x8 8
LargeBufferSize 0x1000 4096
MediumBufferSize 0xbc0 3008
Reboot to effect the change.
Epicor Software Corporation
© 2000 All Rights Reserved.
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