Posted on 2001-07-11
Last Modified: 2010-04-04
Can I compress an Interbase database ?
Question by:SChatel
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Expert Comment

ID: 6273692
If you mean zipping an Interbase DB for archiving or storage, the answer is yes. If you mean running a disk compression utility while the DB is operational, I'd have to say no. Even if you could get it to work, I'd think you would suffer a major loss of access time.
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Expert Comment

ID: 6273825
no, if you something like in acces, its a sql-database not a desktopdatabase

Expert Comment

ID: 6274440
You might also want to read up on "sweeping", which will remove garbage from your dataset.
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Expert Comment

ID: 6275773
He may mean "how to pack InterBase database" the same way that you can truncate log and shrink database in MS-SQL


Author Comment

ID: 6275957
Yes I want to pack Interbase Database, I find that you can make it by the command : gbak  

There is an technical article about that on the Borland's Internet site.

Thanks for your help, YodaMage, kretzschmar, Motaz    


Expert Comment

ID: 6276341
Hi SChatel,

gbak can produce packed backup file. But it isn't possible to pack working database file.


Expert Comment

ID: 6279762
Once an InterBase database allocates disk space, it never releases it, even if you delete all the data. The reason is that the shrinking (eventually expanding) would use system resources (CPU, memory) which may degrade database server performance (there is an assumption that you're not the only one connected).

The only way to "shrink" the database is performing backup /restore (either using gbak command line utility, IBConsole, or other utility - there are many).


"C:\Program Files\Borland\InterBase\bin\gbak" -b -v c:\user\bego\data\bike.gdb c:\user\bego\data\bike.gbk -user "sysdba" -password "masterkey"

will backup the database,

"C:\Program Files\Borland\InterBase\bin\gbak" -c -v c:\user\bego\data\bike.gbk c:\user\bego\data\bike.gdb -user "sysdba" -password "masterkey"

will restore it.

If you're still unsatisfied with the result, you may try to set page size to smaller value (1024 is the smallest possible) but this may degrade performance.



Expert Comment

ID: 7024780
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Accepted Solution

Motaz earned 50 total points
ID: 7026637
Hi, if now you can use new Delphi 6's Interbase Adim Component (ibBackupService) to backup and compress Interbase 6 database.
See Demos\db\Interbase Admin


Expert Comment

ID: 7077150
Finalized by Moondancer - EE Moderator

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