Page Writers view
The Page Writers view provides data about your Before-image, After-image, and Asynchronous Page Writers, as well as checkpoint information. The Page Writers view is divided into the BI summary section, AI summary section, Asynchronous Page Writer summary section, and Checkpoint summary section. See Figure 3–28, Figure 3–29, Figure 3–30, and Figure 3–31 for samples of each of these sections.
Figure 3–28: BI summary section
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Figure 3–29: AI summary section
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Figure 3–30: Asynchronous Page Writer summary section
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Figure 3–31: Checkpoint summary section
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The Checkpoint summary section contains the following columns:
- Start Time — The time the checkpoint started.
- Duration — The length of time the checkpoint lasted.
- # Pending — The number of database buffers not yet written to disk.
- # Written — The number of buffers written to disk.
- # Scan — The number of buffers written during the scan.
- # APW — The number of buffers written from the APW queue.
- # Flushed — The number of buffers flushed at the checkpoint.
The data displayed in the Page Writers sections comes from the following VSTs:
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