Procedure documentation Displaying Read and Write Operations Locate the document in its SAP Library structure

Use

The database server keeps statistics about the current number of the physical and logical read and write accesses since the database instance was last started.

Procedure

Choose Instance ® Information ® I/O.

Name

Name

Logical Reads

Number of logical read requests

Logical Writes

Number of logical write requests

Physical Reads

Number of physical read requests

Physical Writes

Number of physical write requests

The details are displayed for the following data areas:

Catalog

Data area occupied by the data dictionary of the database system.
Frequent writing to this area is a sign of modifications made to the database design.

Permanent Data

The actual data area for permanent data.

Temporary Data

Data area on the hard disk that is used temporarily, that is required, for example, when building selected data sets.

Long Data

LONG columns

Leaf, Level 1, Level 2, Level 3

Data tree structure The database organizes the stored data as Structure linkB* trees.

SUM shows the total number of accesses.