Description
Online program
This program displays a comparison of logical and physical read andwrite operations, which were performed since the last DB restart. Readand write operations are performed by pages, a page being 4 KB in size.

Precondition
Call transaction ST04
Menu: Goto -> Activity -> Current statistics -> I/O statistics

Output

• Data pages:

Comparison of logical and physical I/O in relation to the data pagelevel

• Catalog accesses:

Number of logical/physical catalog read and write operations.

• Permanent:

Number of log./phys. read and written permanent pages

• Temporary:

Number of log./phys. read and written pages, which were used to build
temporary results
Leaf:
Pages in B* tree
Level 1,2,3:
Index pages in B* tree