VTS Database Space Modeling (DBMODEL)

This section describes the information required to define the Analyzer to the Database Space Modeling Facility. Specifically, the user must provide values for the cycle (data retention) definitions. The special considerations for defining the FILE input statements to the Database Space Modeling facility are discussed.
micsrm140
This section describes the information required to define the Analyzer to the Database Space Modeling Facility. Specifically, the user must provide values for the cycle (data retention) definitions. The special considerations for defining the FILE input statements to the Database Space Modeling facility are discussed.
Database Space Modeling Facility explains how these values are used in estimating the DASD requirements of the database, and how the user can input these values to the modeling facility.

Data Retention Specifications (FILE Statements)

Data retention specifications tell the
MICS
database how many cycles of each file in each supported timespan are to be saved, both in online and archive modes.
The worksheet is organized by information area. Each file in the area is listed by name. For each file, a line is formatted to allow six definitions in the online database and two in the archive database:
  • The online database files quantify the number of cycles of data that is maintained in the DETAIL, DAYS, WEEKS, MONTHS, and YEARS timespans and the TABLES data area.
  • The two definitions for the archive database files quantify the number of cycles of data to be retained, up to the cutoff limit defined. The archive definitions have no impact on the size of the database and can be specified whether the weekly and/or monthly archive history files have been activated (
    MICS
    JCL Planning and Parameters).
The worksheet formats provide an underscored area for the user's definition, followed by the recommended value, shown within parentheses. If the underscored area contains a value of 00, the file is not supported for the indicated timespan. To add support, perform database tailoring as described in Tailoring the Database.
When specifying a retention limit, remember that the number may never be zero if the file has been defined to be active in the timespan.
Example:
The FILE statements listed below illustrate how to enter the information:
FILE VTS IVTTCA 00 33 52 24 00 02 000 024 FILE VTS IVTVDL 00 33 52 24 00 02 000 024 FILE VTS IVTVTC 00 33 52 24 00 02 000 024 FILE VTS IVTVCL 00 33 52 24 00 02 000 024 FILE VTS IVTIEX 00 33 52 24 00 02 000 024 FILE VTS IVTVCU 00 33 52 24 00 02 000 024 FILE VTS IVTPTU 00 33 52 24 00 02 000 024 FILE VTS IVTVPS 00 33 52 24 00 02 000 024

DBMODEL Input Statements

The DBMODEL member of prefix.MICS.PARMS provides the input to the Database Space Modeling Facility.
Update the DBMODEL member to customize the cycle retention values for each file in units containing the TLM component. To perform the space modeling, submit the jobs as described in Executing the Database Space Modeling Facility.