Andre Schubert writes:
I'am using Zope 2.1.6 and my Data.fs is going corrupted .... My Questions are: is there a way to delete the last transaction from Data.fs, There is a product "tranalyze" (or "tranalyzer", "tranalyse", "tranalyser") that allows you to analyse and fix your Data.fs.
Zope 2.2 contains an "ZODB.fsrecover" which is able to fix a corrupted "Data.fs".
and can i backup the Data.fs when Zope is running. .... Yes. Just copy it.
Dieter
At 12:41 PM 8/18/2000, Dieter Maurer wrote:
Andre Schubert writes:
and can i backup the Data.fs when Zope is running. .... Yes. Just copy it.
Dieter
Surely this raises some data integrity issues if you copy in mid-transaction? Or does an incomplete transaction at the end of the db just get thrown out, and the design of the db assure that only the end of the file gets updated?
Surely this raises some data integrity issues if you copy in mid-transaction? Or does an incomplete transaction at the end of the db just get thrown out, and the design of the db assure that only the end of the file gets updated?
An incomplete transaction at the end of Data.fs gets ignored and is subsequently overwritten by the next new transaction. Data is always appended to the file.
On Sat, 19 Aug 2000 14:17:51 -0400 (EDT), Chris McDonough <chrism@digicool.com> wrote:
Surely this raises some data integrity issues if you copy in mid-transaction? Or does an incomplete transaction at the end of the db just get thrown out, and the design of the db assure that only the end of the file gets updated?
An incomplete transaction at the end of Data.fs gets ignored and is subsequently overwritten by the next new transaction. Data is always appended to the file.
.....except during an 'Undo', when one byte is rewritten in the middle of the file. Toby Dickenson tdickenson@geminidataloggers.com
participants (4)
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Chris McDonough -
Dieter Maurer -
Ross Boylan -
Toby Dickenson