Monitoring the Status of SAP R/3 BASIS

By using the following tools, you can monitor how the memory resources are used within the R/3 System:

• Transaction ST06 or the CCMS Alert Monitor: For monitoring the available swap space in the host system.

Guidelines: If the available swap space is less than 200 MB, increase the swap space (virtual memory paging file under Windows NT).

Examples:

Checking Unused Working Memory using Transaction ST06

AS/400: When you determine the relevant paging activities of the operating system with Transaction ST06, enlarge the corresponding memory pool. See AS/400.

• Tune Summary in the CCMS (Transaction ST02): The current status and the memory resource usage for a specific R/3 application server are displayed here.

Examples:

Checking Roll /Paging Area and Extended Memory using Transaction ST02

• Summary of the Performance Analysis (Transaction STAT): The performance statistics for a detailed analysis of memory usage and performance are chosen and displayed here.
• Workload Analysis (Transaction ST03): For example, the application server performance for the memory usage is analyzed here, among other criteria.
• Overview of Users (Transaction SM04): To display the memory amount and type reserved by the user contexts of all users for a specific R/3 application server, choose Tools ® Administration ® Monitor ® System monitoring ® User overview and then choose Goto ® Memory.
• CCMS Control Panel (Transaction RZ03): To display the memory resource usage for all R/3 application servers, choose Tools ® CCMS ® Control/Monitoring ® Control panel ® Edit ® Other views ®Memory management.

Using Transaction RZ03, you can determine how much Extended Memory your server allocates. The peak value under Memory management displays the high water mark (maximum allocation) for Extended Memory.

Examples:

Overview of All Application Servers using Transaction RZ03

• Work Process Overview (Transactions SM50 and SM51): To display the memory resource usage foe a specific work process, choose Tools ® Administration ® Monitor ® System monitor ® Process overview. Then select an entry and choose Goto ® Detail info.

By monitoring work processes in the R/3 System (Transaction SM50) or from outside the system (dpmon), you can determine the status of the work processes in relation to the PRIV mode. If work processes are often switched to the PRIV mode, you must increase the Extended Memory and/or adjust the limit for the Extended Memory. In this case, you must consult with SAP.

You can evaluate this information for all the work processes by using Transaction SM66.

For more information on this topic, read the CCMS documentation. CCMS: Overview