Progress
Startup Command and Parameter
Reference


Maximum Private Buffers per Connection (-Bpmax)

Operating 
System
and
Syntax 
UNIX
Windows 
-Bpmax n 
Use
With 
Maximum
Value 
Minimum
Value 
Single-user
Default 
Multi-user
Default 
DBS
25% of -B
1
64
64

n

An integer specifying the maximum number of private buffers.

The Maximum Private Buffers per Connection (-Bpmax) parameter is a broker setting which controls the number of private buffers a connection can request through the Private Read-only Buffers (-Bp) parameter.

The number of blocks in the database buffers is controlled by the Blocks in Database Buffers (-B) parameter. Up to 25% of the blocks created may be allocated for use as private buffers. When a client connects to a Progress database, the connection requests -Bp n private buffers. Prior to 9.1C, the maximum value of -Bp was 64. With the new -Bpmax parameter, the broker may override this limit by allowing the value of -Bp to be up to 25% of -B.

NOTE: Each use of a private read-only buffer reduces the number of public buffers. The total number of private buffers for all simultaneous users is limited to 25% of the total blocks in database buffers.


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