Problem/Issue 5366
 
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Open Build: Open Date: Language:
1.82.294 19.04.2004 (All)
Closed Build: Close Date: Platform:
1.90.306 21.04.2004 ???
State: Reference PDR ID: Hotfix Rollup No.:
CLOSED    
Symptom:
DELDBE: USE ... SHARED/READONLY not supported
Description:
Using a the DELDBE to open a ascii-file in shared or
readonly mode leads to a "Internal data structures corrupted"
runtime error.

Internally the DELDBE only supports EXCLUSIVE access to
ascii files. This is because the DELDBE itself supports
no locking and therefore fails to handle SHARED row-level
access properly. As a side effect the DELDBE also ignores
the READONLY attribute.





Solution:
This behaviour is classified as a defect and will be resolved
in the next Xbase++ release.

The DELDBE will support the SHARED access mode, but only
on the file-system level. This way access to shared files
becomes possible however concurrent updates are not allowed
and will fail. Also support of READONLY access is guaranteed.
Any attempt to write then results in a runtime error
"write access denied"




 
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