Data Access Worldwide Knowledge Base
Article Text
PROBLEM:
By default, Windows 95/98 and NT workstations read cache data when used with Novell Netware servers. This can cause data integrity problems such as data file corruption and index corruption.
SOLUTION:
Read-buffering of Windows 95/98/NT client workstations must be disabled. Doing so depends upon which client software (network client) you are using.
There are 3 Clients for NetWare:
1. Microsoft client for NetWare
A tag needs to be added to the System.ini file in the workstation's windows directory:
[NWREDIR]
ReadCaching=0
2. Novell Netware client 32 - this is discussed in Jim Albright's Technical White Paper "Integrating DataFlex with Netware"
3. Novell Internetware - this is discussed in Jim Albright's Technical White Paper "Integrating DataFlex with Netware"
DOCUMENTATION:
3.1 Readme file (Read31.pdf):
When running Windows 95 on a Novell network, programs that only read (do not write) data from a file may not have access to updates to that file made by other users while the program runs. You can overcome this behavior by having your read-only program perform a write to the file from time to time, which will flush the Windows VCACHE buffer. An alternative that requires no changes to your program code is to place the line ReadCaching=0 in your Windows SYSTEM.INI file in the [NWREDIR] section.
WHITE PAPERS
Access the White Paper entitled "Integrating DataFlex with Netware":
1. Go to http://www.dataaccess.com
2. Click on Support
3. Click on White Papers
Web Links Related to this Article
DAW Knowledge Base article 1350: Data Access Worldwide Technical White Papers
URL=http://www.dataaccess.com/KBasePublic/KBPrint.asp?ArticleID=1350
Data Access Worldwide White Papers
URL=http://www.dataaccess.com/WhitePapers
File Caching and Opporturnistic Locking in a Netware Environment
URL=http://support.novell.com/cgi-bin/search/searchtid.cgi?/10071902.htm
Email this Article
Email this Article to a Colleague
Send Feedback on this Article to Data Access Worldwide
Copyright ©2010 Data Access Corporation. All rights reserved.
| The information provided in the Data Access Technical Knowledge Base is provided "as is" without warranty of any kind. Data Access Corporation disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Data Access Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Data Access Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. |