Sorry for reopening a very old and OT thread, but my needs are quite the same
as Viktor's one and i think something changed after 2005.
I ported successfully a large clipper 5.2e application, working on many
networks, to Harbour 2.0.
Now, before to swap the installation to Harbour version, i would to test the
effectiveness of the job using one or few Harbour workstation concurrently
with old Clipper ones on the same network.
Thus, i changed the Clipper app to use the DBFCDX driver and compiled
Harbour using the same driver and setting the locking scheme to CLIP (not
CLIP53). The adopted code is:
REQUEST DBFCDX
RDDSetDefault("DBFCDX")
RddInfo( RDDI_LOCKSCHEME, DB_DBFLOCK_CLIP )
REQUEST HB_LANG_IT
REQUEST HB_CODEPAGE_IT850
hb_cdpSelect('IT850')
hb_LangSelect('IT')
Apart of a dirty Clipper problem about the compound indexes (i posted
yesterday a message on the google clipper group) solved using the INDEX
command in place of the OrdCondSet()/OrdCreate() pair, the program crashes
only in one function, giving a "lock required" error after a successfully
lock of the same record. The strange thing is that the flow is apparently
the same of other parts of the application working fine.
Thus, i'm thinking that i gone wrong in some configuration option or i'm
ignoring some bug of the adopted implementation.
Ther'is any hint about the DBFCDX driver coexistence? Ther'is another better
path to try (not SQL based, as i need to mantain DBF approach before
quitting old Clipper world).
TIA.
Maurizio
Szakáts Viktor (Syenar) wrote:
>
> Hi all,
>
> Not strictly a developer question, but could anyone advise
> me, if the (x)Harbour CDX RDD is ready/recommended for
> heavy-duty live networked usage at the current stage?
>
> I'd like to put some Harbour compiled (win32) systems into
> live testing (first with 2-3 concurrent users), and I'd like to
> avoid database/index corruption.
>
> Is the locking method in (x)Harbour CDX compatible with
> CA-Clipper 5.2e? (I'm using SIXCDX actually)
>
> Any stories and opinions are very welcome.
>
> Brgds,
> Viktor
>
> PS: ADS is not an option for me.
> _______________________________________________
> Harbour mailing list
> [email protected]
> http://lists.harbour-project.org/mailman/listinfo/harbour
>
>
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