Page Writers view
The Page Writers view displays data about your Before-image, After-image, and Asynchronous Page Writers, as well as checkpoint information. The Page Writers view is divided into the following sections: BI summary, AI summary, Asynchronous Page Writer summary, and Checkpoint summary. See Figure 3–29, Figure 3–30, Figure 3–31, and Figure 3–32 for samples of each section.
Figure 3–29: Before Image summary section
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Figure 3–30: After Image summary section
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Figure 3–31: Asynchronous Page Writer summary section
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Figure 3–32: Checkpoint summary section
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The Checkpoint summary page contains the following columns:
- Start Time — The time the checkpoint started.
- Duration — How long the checkpoint lasted.
- # Pending — Number of database buffers not yet written to disk.
- # Written — Number of buffers written to disk.
- # Scan — Number of buffers written during the scan.
- # APW — Number of buffers written from the APW queue.
- # Flushed — Number of buffers flushed at the checkpoint.
The data displayed in the Writer sections comes from the following VSTs:
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