The database instance keeps statistics about the current number of the physical and logical reads and writes since the database instance was last started. You can display these statistics in the Database Manager GUI.
The database instance is in the operational state ONLINE.
Choose Instance ® Information ® I/O.
Name |
Type of data area information |
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 following data area information is displayed:
Catalog |
Data
area occupied by the database
catalog |
Permanent Data |
Data area for permanent data. |
Temporary Data |
Data area on the hard disk that is used temporarily; required, for example, when constructing selected data sets. |
Long Data |
|
Leaf, Level n |
Data tree structure The database system stores the SQL data as B* trees (see also Background Knowledge: SAP DB, Data Management Using B* Trees) |
SUM |
Total number of accesses |
Converter |
Data area occupied by the converter |