History Selection panel

The History Selection panel (or Generation Member List panel) provides a list of generations for a selected member in a PDSE that is defined to support member generations.

The panel is displayed when you enter the History command in the prefix area on a Member Selection panel.

Panel and field definitions

Figure 1. Generation Member List panel
  Process   Options   Help
 ──────────────────────────────────────────────────────────────────────────────
  File Manager             Generation Member List            Row 00001 of 00004

  Compare option  1    1. ISPF  2. SuperC  3. File Manager

 DSNAME FMN.PH11137.PDSEV2F
        Name     Prompt   Rel Gen Size Created    Changed             ID       _
        *        *                     *          *                   *         
 ______ MEM1                0   0    2 2019/02/15 2019/02/15 09:43:05 HGRAMPA   
 ______ MEM1               -1   3    3 2019/02/15 2019/02/15 09:24:38 HGRAMPA   
 ______ MEM1               -2   2    2 2019/02/15 2019/02/15 09:22:09 HGRAMPA   
 ______ MEM1               -3   1    1 2019/02/15 2019/02/15 09:21:13 HGRAMPA   
 ****  End of data  ****                                                        




 Command ===>                                                       Scroll PAGE
  F1=Help      F2=Split     F3=Exit      F4=CRetriev  F5=RFind     F7=Backward
  F8=Forward   F9=Swap     F10=Left     F11=Right    F12=Cancel
Compare option

Specify the comparison utility to be used for the Compare prefix commands (CC, CN, CP, and CS):

  1. ISPF Edit compare, using the ISPF VIEW service. This is the default option.
  2. SuperC compare.
  3. File Manager Compare function (DSM).
Notes:
  1. Option 3, File Manager is the default option for comparing unformatted records such as program objects.
  2. For option 1. ISPF and option 2. SuperC, member generations are copied to a temporary data set to perform the comparison.
The fields displayed for the member list vary depending on the type of data set being displayed:
  • PDSEs with formatted records
  • PDSEs with unformatted records (such as program objects)

The common fields displayed (for either type) are:

(prefix area)
You can enter commands in the prefix area before each row in the member list. For details of the supported commands, see Prefix commands.
Name
The name of the member.
Where generation information is displayed:
  • Current members (generation 0) are highlighted in white.
  • Member generations are blue.
  • Orphaned member generations (without a generation 0) are red.
Where alias information is displayed:
  • Primary members are highlighted in white.
  • Aliases are blue.
Prompt
A dynamic area that displays the last action that occurred for the listed member.
Rel
This is the relative generation number of the member generation. The relative generation is either 0 or a negative number. The current member always has a relative generation = 0, with the most recent generation created having a relative generation of -1, then -2, and so on. The maximum number of generations is defined by the MAXGENS parameter when the PDSE version 2 data set is created.
Gen
This is the absolute generation number of the member generation. The absolute generation is either 0 or a positive number. The current member always has an absolute generation = 0. The absolute generation number is 1 for the first generation and incremented by 1 for each new generation.
For data sets with formatted records, the following fields are displayed for members stored with ISPF statistics, otherwise they are left blank:
Size
The current number of statements in the member.
Created
The date the member was created, in YYYY/MM/DD format.
Changed
The date and time, in YYYY/MM/DD HH:mm:SS format, on which the member was last changed.
ID
The User ID of the person who last created or changed the member.
INIT
The initial number of records in the member.
MOD
The current number of records in the member
VV.MM
The version and modification level of the member.
Note: Modifying the current member will update the ISPF statistics (if saved) for the current member but will not affect the ISPF statistics on the member generations.
For data sets with unformatted records, the following fields are displayed:
Size
The hexadecimal value for the load module size.
AC
Authorization code.
AM
AMODE binder value.
RM
RMODE binder value.
Attributes
Attribute values determined by binder:
RF
The module is refreshable.
RN
The module is reenterable.
RU
The module is reusable.
OV
The module has overlay structures.
NX
The module is not executable.
OL
The module is loadable.
SC
The module is scatter format.
TS
The module has test attribute.
TTR
The TTR of the first block of text.

For PDSEs the TTR field is a token that simulates the track and record location of the member, also known as Member Locator Token (MLT).

EPA
Entry point address associated with the member name or alias name.
SSI
SSI information word.

Available commands

The following primary commands are available:

Parent panels

Child panels

  • None.

Related tasks and examples