About System Statistics

The System Statistics page displays statistics for:

• Physical I/O. A physical I/O is an I/O that requires disk access. This report displays disk access statistics for physical reads and writes.

• Logical I/O. An logical I/O is an I/O that is satisfied in memory or disk. Displays the sum of buffer reads which might be consistent gets or current mode gets. Redo is the buffer in the SGA that contains information about changes.

• Memory Statistics. Displays memory consumption of the database.

• Time Statistics. Shows various times consumed by the database.

• SQL Cursor Statistics. Displays statistics about the cursors in the Oracle database.

• Transaction Statistics. Shows the number of transactions performed.

To view the System Statistics page:

1. On the Workspace home page, click the Utilities icon and then Database Monitor.

2. Click System Statistics.

3. If prompted, enter the appropriate administrator user name and password and click Login.

   The System Statistics page appears.

Additional controls on the System Statistics page include:

• Refresh Report - Refresh the System Statistics report.

• Save Statistics - Save the current report.

• Show delta between current and saved values - Click this check box to display actual statistic values, or display deltas between an saved value and the current value.

  
  

  See Also: "Memory Configuration and Use" in Oracle Database Performance Tuning Guide