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Database Administration
Reference : Database Startup Parameters : Alphabetical listing of database startup parameters : Nap Maximum (-napmax)
 
Nap Maximum (-napmax)
Operating system and syntax
UNIX / Windows
-napmax n
Use with
Maximum value
Minimum value
Single-user default
Multi-user default
DBS
–
–
–
250
n
The maximum time (in milliseconds) to sleep (nap)
Use Nap Maximum (-napmax) to specify the maximum time (in milliseconds) to sleep (nap) after the -spin value is exhausted due to failure to acquire a latch.
Increasing the value of -napmax can decrease CPU utilization, and can decrease individual user performance while improving performance of the overall system.
Testing by Progress Software has determined that 250 milliseconds is a good default. Changing the value of -napmax away from the default is not recommended.