ST02: Tune Summary [Monitoring]
ST02 is used to display the current status of memory resource usage for a specific SAP application server.
If you are seeing red entries on the swaps then further check up is needed. Double click on each red entry line and display the tune/buffer history [Go to -> Performance database -> This server history].
Hint:
- HitRatio for each buffer > 95%.
- Check the free space & the free directory for each buffer.
- Check Hits, program buffers should be 10000 hits/day & for other buffers it should be 1000 hits/day.
Solution: Amend the Buffer parameter values by increasing the old value by adding approx 10% and then restart the system. Buffer swapping is normal as long as the HitRatio > 95% , then nothing need to be change.
Hint: Current usage of Extended memory < 75%.
Hint: Hit ratio > 95% for “Select” and “Select Single”.
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