Net.Data Books

Administration and Programming Guide for OS/390

Using a Net.Data-provided Macro for More Advanced Management

Net.Data automatically manages cached Web pages and the LOBs they reference using expiration times. Net.Data also offers more advanced styles of management through a Net.Data-provided macro, manage_cache.dtw. With this macro, you can:

To begin the macro, invoke the BEGIN HTML block of the manage_cache.dtw located in the directory /usr/lpp/netdata/macros. To learn more about how to invoke a macro, see Invoking Net.Data.

To delete expired dynamic Web pages and large objects that have been cached:

  1. Invoke the BEGIN HTML block of the manage_cache.dtw macro.
  2. Click the Delete dynamic Web pages and large object files that have expired choice.
  3. Click the EXECUTE push button to proceed, or select Back to the beginning to return to the main page and cancel your request.

To delete cached Web pages and related LOB files:

  1. Invoke the BEGIN HTML block of the manage_cache.dtw macro.
  2. Click on the Delete selected dynamic Web pages and related large object files choice.

    This choice lets you specify a filter and timestamp values for the cached Web pages you want to delete. All expired cached Web pages and LOBs as well as all LOBs referenced by the Web pages are deleted.

  3. Optionally type a string in the Enter the ACTUAL_KEY filter field that matches any part of the ACTUAL_KEY for the Web pages to be deleted. This string acts as filter for selecting the cached Web pages Net.Data deletes. The string can contain up to 250 characters.

    For example, when the following string is entered:

    /netdata/macros/my_macro.d2w/report
    

    Net.Data deletes all cached Web pages that have an ACTUAL_KEY value containing this string. For a detailed description of ACTUAL_KEY, refer to Table 3.

  4. Optionally click on the Starting CREATION_TIME check box and enter a timestamp value. Net.Data deletes all cached Web pages that have creation times greater than or equal to this timestamp value, and that have creation times less than or equal to the Ending CREATION_TIME, if specified. If no Ending CREATION_TIME value is specified, than Net.Data deletes all cached Web pages that have creation times greater than or equal to the Starting CREATION_TIME value.

    For example, when the following timestamp is entered:

     Starting CREATION_TIME: 
     
      Year 1999  Month 03  Day 23 Hour 14  Minute 00  Second 00 
    

    Net.Data deletes all cached Web pages that were created on March 23, 1999 at 2:00 PM or later, up to and including the value of Ending CREATION_TIME, if specified.

  5. Optionally click on the Ending CREATION_TIME check box and enter a timestamp value. Net.Data deletes all cached Web pages that have creation times less than or equal to this timestamp value, and that have creation times greater than or equal to the Starting CREATION_TIME, if specified. If no Starting CREATION_TIME value is specified, than Net.Data deletes all cached Web pages that have creation times less than or equal to the Ending CREATION_TIME value.

    For example, when the following timestamp is entered:

     Ending CREATION_TIME: 
     
      Year 1999  Month 03  Day 23 Hour 23  Minute 59  Second 59 
    

    Net.Data deletes all cached Web pages that were created on March 23, 1999 at 11:59:59 PM or earlier, starting with the value of Starting CREATION_TIME, if specified.

    If the Enter the ACTUAL_KEY filter field is empty and neither of the check boxes are checked, Net.Data deletes only expired cached Web pages and LOBs.

  6. Click the EXECUTE push button to proceed, or select Back to the beginning to return to the main page and cancel your request.

To delete large objects in HFS and related Web pages

  1. Invoke the BEGIN HTML block of the manage_cache.dtw macro.
  2. Click on the Delete selected large object files and related dynamic Web pages choice.

    This choice lets you specify timestamp values for the LOBs you want to delete. All expired Web pages and LOBs as well as all Web pages referenced by LOBs are deleted.

  3. Optionally click on the Starting CREATION_TIME check box and enter a timestamp value. Net.Data deletes all LOB files that have creation times greater than or equal to this timestamp value, and that have creation times less than or equal to the Ending CREATION_TIME, if specified. If no Ending CREATION_TIME value is specified, than Net.Data deletes all LOB files that have creation times greater than or equal to the Starting CREATION_TIME value.

    For example, when the following timestamp is entered:

     Starting CREATION_TIME: 
     
      Year 1999  Month 03  Day 23 Hour 14  Minute 00  Second 00 
    

    Net.Data deletes all LOBs that were created on March 23, 1999 at 2:00 PM or later, up to and including the value of Ending CREATION_TIME, if specified.

  4. Optionally click on the Ending CREATION_TIME check box and enter a timestamp value. Net.Data deletes all LOB files that have creation times less than or equal to this timestamp value, and that have creation times greater than or equal to the Starting CREATION_TIME, if specified. If no Starting CREATION_TIME value is specified, then Net.Data deletes all LOB files that have creation times less than or equal to the Ending CREATION_TIME value.

    For example, when the following timestamp is entered:

     Ending CREATION_TIME: 
     
      Year 1999  Month 03  Day 23 Hour 23  Minute 59  Second 59 
    

    Net.Data deletes all LOB files that were created on March 23, 1999 at 11:59:59 PM or earlier, starting with the value of Starting CREATION_TIME, if specified.

    If the neither of the check boxes are checked, Net.Data deletes only expired LOB files and cached Web pages.

  5. Click the EXECUTE push button to proceed, or select Back to the beginning to return to the main page and cancel your request.


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