Progress
Startup Command and Parameter
Reference


No Crash Protection (-i)

Operating 
System
and
Syntax 
UNIX
Windows 
-i 
Use
With 
Maximum
Value 
Minimum
Value 
Single-user
Default 
Multi-user
Default 
CC, DBS

Use No Crash Protection (-i) to tell Progress to run without using database integrity or database recovery. When running Progress without database integrity, it writes fewer data and before-image blocks to the disk. In this mode, some Progress procedures (such as those that create and delete large numbers of records) run significantly faster than if they are running with database integrity.

When running Progress with the -i parameter, transaction undo is supported. Therefore, there will still be a before-image file, which might grow quite large during very long transactions.

Use this parameter to do bulk data loading or for large batch runs. It reduces the number of disk input or output operations. Loading a database for the first time is a good example of a use for this parameter.

CAUTION: If you run Progress with the -i parameter and Progress fails for any reason, you cannot recover the database.

Do not use the -i parameter unless you have a complete backup of the database and can rerun procedures in case of a system failure. If the system fails during a Progress session started without crash protection, restore the backup copy and rerun the necessary procedures. For information on restoring a database, see the Progress Database Administration Guide and Reference.

The following messages might appear when starting a Progress session after a system failure:


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