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Database "index out of date" error Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
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			Author: William Gerbert 

I was testing a program I wrote and I received an error message saying, "Index is 
out of date." I have no idea what this error means. I have looked everywhere in my 
Delphi books for some help on this problem, and can't seem to find any information 
about it. Can you help me?


This is a BDE/Paradox error message. For newbies, BDE error messages are daunting, 
cryptic messages. Actually, even for seasoned veterans, they can sometimes be real 
"stumpers." Unfortunately, there's no real good reference available that I know of, 
so all I can offer with respect to this error message is my experience.

The "Index out of date" message can mean a couple of things:

One of the more common causes of this error is one in which you have a couple of 
copies of a table existing on your network or machine. For instance, when I develop 
applications, I have my application tables residing in my development system, then 
have copies of them on my network. When I need to update my tables, I usually do 
the updates in my development system, then copy them over to my deployment system 
on the network. I've run into this exact error when I've copied only the table 
(.DB) file and not its accompanying index file(s) (.PX, .X01, .Y01, etc) as well. 
You see, when you update a table by changing it in any way, its index files are 
also resynched to reflect the changes. So if you copy just the table to a new place 
on your system and don't include its family members, you'll index files that aren't 
in synch with your table. Okay that's one cause.
The next cause could be just this: One of your indexes is corrupt. This could be 
due to sector errors on your hard disk, or the rare, but possible, direct 
corruption of an index. This usually happens if your program abended while 
performing an update to a table with an index of some sort. In that case, the index 
doesn't get updated.

But in any case, the only way I know of to correct the problem is to do the 

Open up your table in Database Desktop.
Restructure it.
Define/Rebuild all your indexes.
Save the file.

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