The operating system collector (OS collector), a program called saposcol , is a standalone program that runs in the operating system background independently of the R/3 instances. It collects data on the following operating system resources:

• Virtual and physical memory

This data can be viewed using the CCMS Operating System Monitor.

The saposcol program is part of the standard R/3 System. The two most significant differences between saposcol and other R/3 programs are:

• you need special authorization to use saposcol .

• a single saposcol per host can run independently of R/3 instances.

saposcol collects and records current data every 10 seconds and records hourly averages over the preceding 24 hours.

Another background job, SAP_COLLECTOR_FOR_PERFORMANCE , extracts performance data about the previous 24 hours out of the shared memory and writes it to a performance database. This data can be compared for one or more hosts.

While saposcol collects operating system data while R/3 work processes are running, rfcoscol collects OS data from hosts where no R/3 work process is running as, for example, on dedicated database servers.

R/3 uses a Remote Function Call to remotely start rfcoscol , which then reads the saposcol data from the shared memory and uses a Remote Function Call (RFC) to forward it to the current transaction. The system administrator must maintain Special Remote Function Call destinations for this in the R/3 System.

SAPOSCOL on a UNIX Host

Starting SAPOSCOL

Stopping SAPOSCOL

Installing SAPOSCOL and RFCOSCOL for a Dedicated DB Server

Setting Up RFC Communication to RFCOSCOL

Displaying Collector Data

Controlling SAPOSCOL from the R/3 System

Controlling SAPOSCOL from the Operating System

OS Collector: Troubleshooting