Creating or modifying GSAM database PCBs

Generalized sequential access method (GSAM) databases are sequentially organized databases that are designed to be compatible with z/OS® data sets. Use the GSAM database PCB statement section of the PSB summary page to create or alter a GSAM database PCB statement. The GSAM database PCB statement defines a view that controls how application programs can access the GSAM database.

Before you begin

Open the PSB summary page for the PSB that contains the GSAM database PCB.

Procedure

  1. From the GSAM database PCB statement section of the PSB summary page, you can create a GSAM database PCB statement, and remove and modify existing statements.
    • To create a PCB statement, click Add. A new row is added to the table and the statement properties you can modify are displayed. A sequential PCB number uniquely identifies the new row.
    • To remove a PCB statement, click a row in the table to select it, then click Remove.
    • To edit a PCB statement, click a row in the table to select it, then click Edit and modify the properties. You can edit only one statement at a time.
    You can specify values for these statement properties.
    Property Required or Optional Description
    PCB name Required if LIST=NO. 1-to-8 alphanumeric character PCB name or PCB label that must be unique within the PSB. The name cannot start with a numeric character.
    Start of changeAlias (EXTERNALNAME)End of change Start of changeOptionalEnd of change Start of changeA 1- to 128-character uppercase alphanumeric string that represents the alias of the PCB. Java™ application programs use the external name to refer to the PCB. End of change
    Database name Required. 1-to-8 alphanumeric character name of the physical or logical database description (DBD) to be used as the primary source of database segments for this PCB.
    Processing option (PROCOPT) Required Processing options on sensitive segments declared in this PCB.
    Include named PCB in the PCB list (LIST) Optional Specifies whether to include this PCB in the PCB list that is passed to the application program at entry. The default is Yes.
  2. Click File > Save.




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