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Overview of SELECT filters

You can use SELECT filters to narrow the focus of an analysis job to log records and LUOWs that meet a specific set of conditions.

You specify filters by using keywords and values, and you can combine filters with Boolean logic to narrow the scope of the search for LUOWs. A narrower scope of records and LUOWs results in a smaller amount of output data from the analysis. Fewer elements can be managed more efficiently and effectively during problem determination.

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Specifying-SELECT-filters

Knowledge of the applications that are running in the IMS systems is valuable when you are determining the values to use for filter keywords.

You might want to start by making a broad sweep of the logs (by running the analysis with interval and log record code limitations but without filters) and producing only the Analysis Summary report. This action provides a general picture of the data within the specified interval and helps you to determine whether the time frame is of interest.

You specify SELECT filters by using the SELECT keyword on the FILTER control statement. Each filter consists of the following elements that form an expression:

  • A subkeyword indicates the type of filter, which usually corresponds to a field (such as a transaction name, a logical terminal, or a user ID) to search in the record.
  • A filter value indicates the value that is the target for comparison.
  • A logical operator indicates how the value of the record field must be compared to the filter value for the comparison to result in a true condition.

 

Tip: For faster searching, add an asterisk to the end of your partial query. Example: cert*

BMC AMI Log Analyzer for IMS 1.7