Progress
Startup Command and Parameter
Reference


After-image Buffers (-aibufs)

Operating 
System
and
Syntax 
UNIX
Windows 
-aibufs n 
Use
With 
Maximum
Value 
Minimum
Value 
Single-user
Default 
Multi-user
Default 
DBS
1
5

n

The number of after-image buffers to use.

Use After-image buffer (-aibufs) to specify the number of after-image buffers. This parameter is useful only when running the after-image writer (AIW) because the AIW writes the filled after-image buffers to disk, making the buffers available to other client and server processes. Progress Software recommends you set -aibufs to a value of 1.5 times the value of the Before-image Buffers (-bibufs) parameter, or a minimum of 5.

Without the AIW writing the buffers, any gain from increasing the number of buffers is negligible.


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