<number_of> pending I/O requests on volume <volume_name>
Informs about I/O requests that could not be fulfilled immediately. A high number indicates that the I/O workload is high and the I/O requests cannot be processed in the optimal way.
Check your disk architecture.
Check if there is an unnecessary high level of I/O requests because of inadequate access strategies.
|Relevant DB-Analyzer Files||Helpful with ...|
|DBAN_IOTHREADS.csv||Find statistics about pending I/O requests.|
|DBAN_IO.csv||Read and write operations to cache pages and data pages|
|Expert Sessions||Content / Helpful with ...|
|Session 26: SAP MaxDB I/O Concept||General information about I/O concept.|
|Session 29: SAP MaxDB: Improvements in I/O Handling 7.9 and Prefetch Mechanism||General information about I/O concept.|