Online analysis

The BMC AMI Fast Path Online Analyzer for IMS product can read and analyze a DEDB while the DEDB is online. Online analysis operating characteristics are as follows:

  • The DEDB is online to IMS when analysis occurs.
  • Read-with-integrity access (shared locks) is used. IMS services are used to read the DEDB.
  • Other applications can update the DEDB while analysis is in progress.

Related topics

Analyzing-a-DEDB-online

BMC AMI Fast Path Online Analyzer for IMS locks each UOW briefly while it is read and analyzed. Another application momentarily cannot read that one UOW; however, other applications can access the remainder of the database during that time. A UOW that is being processed by an application is locked by the IMS system, preventing BMC AMI Fast Path Online Analyzer for IMS from accessing the UOW until it is unlocked by the application.

Control region requirement (ACCES=UP)

When performing an online analysis, you must define the database to the IMS Control Region with ACCESS=UP.

Inputs and outputs

The following figure shows the inputs and outputs for the online analysis function:

GUID-B44CB9F2-5751-48A6-8BDA-5BD1AAE25EB7-low.jpg

Control statement sample

Analysis is limited only to the area that is specified with the IAREA keyword.

Example of JCL for an online analysis

//PFP EXEC PGM=DFSRRC00,REGION=0M,      PARM=(IFP,<dbdname>,DBF#FPU0)
//STEPLIB  DD   DSN=BMC.PFP.LOAD,DISP=SHR
//         DD   DSN=IMS.RESLIB,DISP=SHR
//PFPSYSIN DD   *
  ANALYZE DBD=<dbdname>,IAREA=<areaname>
/*

MADS support

Multiple area data sets (MADS) are fully supported by the online analysis process.

 

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