is there any risk of corrupting a database/table doing something like:

alter mytable add amount currency

while users are using the system?


----- Original Message -----
From: "Troy Sosamon" <[EMAIL PROTECTED]>
To: "RBASE-L Mailing List" <[EMAIL PROTECTED]>
Sent: Friday, June 20, 2003 11:31 AM
Subject: [RBASE-L] - RE: SYS_TABLES TABLE


> When you unload the schema for your database, it will be a very small file
> and you can edit it with just about anything.
>
> connect mydatabase
> out mydb.sch
> unload schema
> out screen
>
> The file won't be over 500 k.
>
> You unload just the data to a seperate file.
>
> On a big database, I would write a program that would unload the data for
> each table to seperate file.  This keeps everything managable and you can
> edit the files if you need to.  On the really large tables, you might even
> want to put them in multiple files.  I would try to keep the files below
100
> megs each.
>
> Troy
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rommel
> Relosa
> Sent: Friday, June 20, 2003 11:53 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> No, it wouldn't since the data file will be 700 MB instead of 780 MB, and
at
> the time, I don't have a text editor that can load such a beast.
>
>
> And, I do have RScope, Troy.  :)
>
> I've used it to rebuild the database structure pointer-by-pointer to
correct
> a corruption problem on the SYS_COLUMNS table.  Never again would I modify
> an unused table when 30 users are hitting the database at the same time.
> Hard lesson to learn, but, with RScope my colleagues and I were able to
> recover the structure of the database and had very minimal (if any) data
> loss.
>
>
> 'Tis why I recommended it to Dan a few posts back.
>
>
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Troy
> Sosamon
> Sent: Friday, June 20, 2003 10:41 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> Yes it would, because you could edit the structure file and not have to
edit
> the data file.
>
> You would just need to delete out the occurance on the weird table.
> Now when you re-build the database, you run the structure file first and
it
> will build the db w/o the weird table.  Now when you run the data file to
> load all of the data back in the tables everything will run fine and when
it
> trys to load the weird table, it won't be in the database so it will spit
> out some errors, but should load everything else fine.  You don't care
about
> those errors because you didn't want that table any way.
>
> Personally I would not use the method on a large database.  I would be too
> afraid of loosing rows.
> I would use R:scope and fix the database with that.  If your #2 file is
1.7
> gigs it will take forever to do this anyway, and I am certain you could
> justify the $130 for R:scope.
>
> Troy
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rommel
> Relosa
> Sent: Friday, June 20, 2003 11:32 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> With a #2 file running at 1.7 GB, I don't it would matter if I unloaded
the
> structure separately.
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Troy
> Sosamon
> Sent: Friday, June 20, 2003 10:25 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> That is why I always do it in 2 parts, an schema file and then the data
> file.
>
> Troy
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rommel
> Relosa
> Sent: Friday, June 20, 2003 11:15 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> UltraEdit...
>
> Thanks, Dennis.  Every one I tried just couldn't load the 780 MB file.
>
>
> Rommel
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dennis
> McGrath
> Sent: Friday, June 20, 2003 6:23 AM
> To: RBASE-L Mailing List
> Subject: [RBASE-L] - RE: SYS_TABLES TABLE
>
>
> For Editing really huge unload files, try UltraEdit.  Awesome!  I've
> done files larger than a gig.  It just won't choke.
>
> Dennis McGrath
>
> --- Rommel Relosa <[EMAIL PROTECTED]> wrote:
> > Dan,
> >
> > If you don't have RScope (yet <g>), you can try this to remove the
> > funky
> > table.
> >
> > CONNECT <DBNAME>
> > OUTPUT UNLOAD.DAT
> > UNLOAD ALL
> > OUTPUT SCREEN
> >
> >
> > Now, if the file is not too big, use a text editor and look for the
> > CREATE
> > TABLE `funkyname` entries and remove it.
> >
> > Then, look for the section with LOAD funkyname and delete the "load"
> > entries.
> >
> > Rename the database (back up purposes, in case reload fails <g>) then
> > issue:
> >
> > INPUT UNLOAD.DAT
> >
> > This will rebuild the database without the table with the funkyname.
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dan
> > Goldberg
> > Sent: Thursday, June 19, 2003 1:51 PM
> > To: RBASE-L Mailing List
> > Subject: [RBASE-L] - SYS_TABLES TABLE
> >
> >
> > Does anybody know how to edit the sys_tables table??
> >
> > I have a table that has a funky name that I can not get a rid off.
> >
> >
> > Dan Goldberg
> >
>

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