1   2   3   4   5   6   7   8   9   10   11   12  13  14  15 …

1.            What has changed since the performance is poor?

• • System Parameter Changes (RZ10)?
  • Increase in the number of users?
  • Kernel patch?
  • Support Packages?
  • Linux and Oracle patches?
  • Hardware Changes?

2.            Any signs of general problems in the System Log - SM21?

3.            Places to look:

• SM50: → Process → Trace → Components – is there a Trace level  set?  Is it greater than 1?  What is the utilization of the work processes?  Click the white clock picture-icon.  Is the total CPU for the last dialog process > 10 minutes?
• ST04: Is the database monitor activated? If yes, it should deactivated it in normal operation.  ST02: Check the buffering quality.  If paging occurs in a buffer, the corresponding parameter should be increased. Also refer to SAP Note 121625 in this context.
• ST03: → Select a server → Today’s Workload:  What are the response times? In the case of poor response times, where is most of the time needed? Button ‘Top Time’:  Are there a lot of different transactions with poor response times or are there only a few? Is a certain transaction always slow or only sometimes?
• ST06: → Detail analysis menu → Hardware Info.  To which extent are the hardware resources utilized?  CallST06 at times with poor system performance.  What is the CPU utilization? → Goto → Current Data → Snapshot → Top CPU processes and display the main CPU consumers.  What is the utilization of the disks? How high is the paging in the base pool?

4.             If only few transactions are affected by the performance problem, you should additionally note the following points:

1.            Check whether modifications were made in the affected or related transactions.

2.            ST03: Display the corresponding performance records.

Read More…

Creating a client and setting up the client attributes 

To create a client you have to maintain T000 table. From 3.0 onward, transaction SCC4can be used to maintain T000 table. Also you can chose Administration-> Client admin -> Client Maintenance from the initial screen to do the same. In client table T000, SAP system displays all the clients available, their names, currency used and when the client was changed last. If the system is in display mode then you must change it to the change mode by selecting the display/change icon to create a new client. When you click display/change button, a warning is displayed as “Warning: the table is client-independent”. The “New entries” icon should be clicked to create a new client.

In the new client creation screen to define a new client you must fill all the required entries. The client number and the name are entered first. Then in the second line the location of the SAP system is defined.

Logical system is defined next.  SAP uses logical system concept in ALE (Application Link Enabling), workflow and EDI areas. The logical system must be unique through out the company and any other ALE system group can not use it. You must be careful changing the logical system entry. SAP treats a logical system as a client. You can use transaction BD54 to create a logical system and then enter that entry in the logical system box while creating a client. 

Read More…