Main   Products   Offshore Outsourcing   Customers   Partners   ContactUs  
JDBC Databases
  HXTT Access v5.2
  HXTT Cobol v2.1
  HXTT DBF v5.2
 
  Buy Now
  Support
  Download
  Document
  FAQ
  HXTT Excel v4.2
  HXTT Paradox v5.2
  HXTT Text(CSV) v5.2
  HXTT XML v1.2
Offshore Outsourcing
Oracle Data Import/Export
DB2 Data Import/Export
Sybase Data Import/Export
Free Resources
  Firewall Tunneling
  Search Indexing Robot
  Conditional Compilation
  Password Recovery for MS Access
  Password Recovery for Corel Paradox
  Checksum Tool for MD5
  Character Set Converter
  Pyramid - Poker of ZYH
   
   
   
Hongxin Technology & Trade Ltd. of Xiangtan City (abbr, HXTT)

HXTT DBF
DBF Header error
Mauricio Porto
2008-01-10 09:10:05.0
Hi,

Our software is a handheld ordering system for restaurants, that needs to send orders to a third-part point-of-sale system.

The waiters can send orders by the handheld (Java) or directly on the point-of-sale (Clipper) and both of them can also
generate the customer's account.

In some circunstancies (less than 5% of the operations), the POS aplication didn't show all (or any) itens of some customers.
We made a test executing a "reindex all on PEDATIVO" when this happen and the missing itens now appears.

We also made copies of the tables before and after the "reindex all" runs. I tried to open the incorrect DBF
using cdbf for linux (http://www.whitetown.com/cdbflinux/) and the following error was showed:

"CDBF detected a few errors in a header of the database.
Do you wish to write down the corrected header?"

We connect to the database using only the option "lockType=CLIPPER"

What we are doing wrong to get this error ?

If helps, I can send a copy of the Database after and before the reindex.

Thanks (and sorry for my english...)
Re:DBF Header error
HXTT Support
2008-01-10 17:29:17.0
>If helps, I can send a copy of the Database after and before the reindex.
You can send it to support or webmaster mailbox of HXTT. Thanks.
Re:Re:DBF Header error
Mauricio Porto
2008-01-17 10:47:04.0
Hi,

I already send the requested files to webmaster in Jan, 11 .

Did you receive them? Is there any news about my problem ?
Re:Re:Re:DBF Header error
HXTT Support
2008-02-01 19:38:27.0
>In some circunstancies (less than 5% of the operations)
Sorry for missing that thread. Clipper's using buffer concurrency check for NTX, and that flag is using one byte, I guess that maybe sometimes that flag returns the old value after 255 modification, then Clipper thought that NTX hasn't reload the modified index page so that there's invalid index information in that file.

>We also made copies of the tables before and after the "reindex all" runs. I >tried to open the incorrect DBF using cdbf for linux >(http://www.whitetown.com/cdbflinux/) and the following error was showed:
>"CDBF detected a few errors in a header of the database.
>Do you wish to write down the corrected header?"
Whether that error was reported after run "reindex all"?

Search Key   Search by Last 50 Questions




Google
 

Address: 9 Station Rd., Xiangtan City, Hunan Province, P.R. China
Postcode: 411100
Phone: (86)731-58225727
Fax: (86)731-58225727
Email: webmaster@hxtt.com
Copyright © 1999-2011 Hongxin Technology & Trade Ltd. | All Rights Reserved. | Privacy | Legal | Sitemap