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What is ST02?

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What is ST02?

ST02 is a transaction code used for Setups/Tune Buffers in SAP. It comes under the package SAPWL_TOOLS. When we execute this transaction code, RSTUNE50 is the normal standard SAP program that is being executed in background.

Is there any standard in tuning ST02?

Is there any standard in tuning ST02 to hold up the increasing value of swapped objects? Ans: No.

What is hit ratio in ST02?

Hit ratio is the ratio of data retrieval from the buffer and db.So its always better we get data from buffer.so, 95% is the better value for a good performing system.

How will you review SAP buffer and memory for another instance of the SAP system in ST02?

If your system has more than one instance, you can display to another instance via following path from Figure-1 screen: Environment -> RFC server or press shift+F4 key until a popup window shows up with a list of instance, you can click the one you would like to review.

What should I monitor in ST02?

Monitoring Memory Resources in Tune Summary (ST02)

  • Call transaction ST02.
  • If your ABAP system has multiple AS instances, you can display the memory consumption on the individual instances.
  • To display the memory quotas for the different work process types, choose Goto Current Local Data SAP Memory Quotas .

What are swaps in ST02?

(BUFFER SWAPS) Buffer swaps occurs when there are no sufficient directories or space. When more swaps occur they are displayed on ST02 in swaps column.

What is SAP ST03?

The ST03 Workload Monitor is the central access point for analyzing performance problems in the SAP system. In current SAP Releases transaction ST03N replaces transaction ST03 and is automatically started when you enter transaction code ST03. …

What are swaps in SAP?

Swapping occurs when the buffer is full, and the SAP System has to load additional objects into the buffer. In this context, the term “swap” means the objects removed from the buffer are lost and cannot be replaced until a new database access is performed (replacing what was lost).

What is the use of Tcode ST22 in SAP?

You can use the tools of the ABAP dump analysis (ST22) to list the ABAP runtime errors that have occurred in an ABAP system as well as the relevant short dumps. To list the runtime errors that have occurred: Log on to the affected ABAP system.

What is the SAP buffer hit ratio?

A hit is when an object (such as a table, screen, or program) in the buffer is accessed. If the object has to be read from the database, the buffer access fails. Buffer hit ratio = buffer object reads/logical requests. Buffer Quality. Buffer Quality = saved database calls / (database calls + saved database calls)

What is swap in SAP basis?

Swap space is used when the amount of physical memory (RAM) is full. If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space. While swap space can help machines with a small amount of RAM, it should not be considered a replacement for more RAM.

What should I monitor in ST03?

Workload Monitor (Transaction ST03 or ST03N)

  • Number of instances configured for your system.
  • Number of users working on the different instances.
  • Response time distribution.
  • Distribution of workload by transaction steps, transactions, packages, subapplications, and applications.

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