Progress
Database Administration
Guide and Reference


Shared-memory Overflow Size (-Mxs)

Operating 
System  
and Syntax 
UNIX 
NT 
-Mxs n 
Use 
With 
Maximum 
Value 
Minimum 
Value 
Single-user 
Default 
Multi-user 
Default 
DBS
Varies1
1
4KB + (n * 300)
  1. The maximum is limited only by the size of the signed integer data type on the system.

n

The size of the shared-memory overflow area in kilobytes.

Use Shared-memory Overflow (-Mxs) to replace the default value of the shared-memory overflow area; it does not increase it. The overflow area is appended to the shared-memory area. If the overflow area is too small, the database engine exits with the following message:

SYSTEM ERROR: Out of free shared memory. Use -Mxs to increase. 

Depending on the operating system, the database engine rounds the shared-memory area size to the next 512-byte or 4K boundary.


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