Display IAM information
Information displays for any type of data set can be requested from the VSAM utility screen (VSAM Utility Screen) by entering a dataset name and pressing Enter or by placing an S next to the dataset name in a dataset selection list.
When you press Enter, File-AID displays the IAM Information screen as shown in the the following figure. On smaller screens, this panel is scrollable.
COMMAND ===> SCROLL ===> PAGE
CATALOG CATALOG.MVSICFU.V01KTOR
CLUSTER 'USERID0.$IAM.TEST' VOUME SERIAL PRD511
DATA 'USERID0.$IAM.TEST.DATA'
GENERAL DATA: CURRENT ALLOCATION OPTIONS:
DEVICE TYPE: 3390 REUSE OPTION: NO
FILE TYPE: KSDS EXT SHARE OPTION: 1
AVERAGE RECORD SIZE: 10 RELEASE:
MAXIMUM RECORD SIZE: 100 DATA COMPRESS: NO
KEY LENGTH: 5 EATTR: OPT
KEY LOCATION: 0 BLOCKING FACTOR: 4
% INTEGRATED OVERFLOW: 0
DATASETS RELATED TO ENTRY 'USERID0.$IAM.TEST'
TYPE DATASET NAME
CLUSTER - USERID0.$IAM.TEST
DATE INFORMATION: SMS INFORMATION:
CREATION DATE: 23/05/2022 OWNER ID: $IAM
EXPIRATION DATE: STORAGE CLASS: STDDODFW
MODIFICATION DATE: 23/05/2022 DATA CLASS: STRIPEAV
MODIFICATION TIME: GMT MANAGEMENT CLASS QCTEST@S
ENCRYPTION INFORMATION:
KEYLABEL SYS2.CPWR.CRYPTO.LABEL
SPACE ALLOCATION INFORMATION: DATA RECORDS:
UNIT: CYLINDERS TOTAL:
PRIMARY: 50 DELETED: 0
SECONDARY: 50 INSERTED: 0
ALLOCATED TRACKS: 945 UPDATED: 0
USED TRACKS: 0 ( 0%) RETRIEVED: 0
ALLOCATED EXTENTS: 1 OVERFLOW: 0
USED EXTENTS: 1 (100%)
VOLUME INFORMATION: OVERFLOW BLKS: 0
PHYS BLKSIZE: 10240 PE BLOCKS: 0
PHYS BLKS/TRK: 0 EXT BLOCKS USED: 0
HURBN: 0 EXT ALLOC: 0
HARBN: 0 EXT BLOCKS AVAILABLE: 0
HURBA: 0
HARBA: 512
CURRENT ORGANIZATION INFORMATION:
SIMULATED CISZ: 8192
NUMBER OF CIS/CA: 37
FREESPACE CA%: 0
******************************* BOTTOM OF DATA *******************************
The following table describes the fields on the IAM Dataset Information panel:
Field | Description |
|---|---|
CATALOG | Catalog name. |
CLUSTER | Fully qualified name of the IAM cluster. |
DATA | Data component name. |
VOLUME SERIAL | Name of the device on which data is stored. |
GENERAL DATA | |
DEVICE TYPE | Type of device on which data is stored (for example: 3380 and 3390). |
FILE TYPE | Type of VSAM cluster organization: KSDS, KSDS EXTENDED, KSDS LARGE, KSDS BASIC, ESDS, RRDS, AIX, and VRRDS. |
AVERAGE RECORD SIZE | Estimated average size of data record specified at allocation. |
MAXIMUM RECORD SIZE | Largest possible data record that the data set can contain. |
KEY LENGTH | Length of the field within each record that contains key information. This is the length of the prime key for base clusters and the length of the alternate key for alternate indexes. |
KEY LOCATION | The relative position of the prime record key for KSDS base clusters or the relative position of the alternate key in the base cluster for alternate indexes. |
CURRENT ALLOCATION OPTIONS | |
REUSE OPTION | Specifies whether the data set is reusable (can be reloaded). |
SHARE OPTION | Specifies the amount of sharing among regions-systems. The first number displayed is the region share option:
|
RELEASE | Specifies the space release option as either YES or NO. |
DATA COMPRESS | Specifies the Data compress option |
EATTR | Specifies the following options: NO—The data set cannot have extended attributes. OPT—Extended attributes are optional for the data set. |
BLOCKING FACTOR | Specifies the blocking factor. |
%INTEGRATED OVERFLOW | Specifies the %integrated overflow. |
DATASETS RELATED TO ENTRY | Fully qualified name of the VSAM data set listing the TYPE and DATASET NAME. |
DATE INFORMATION | |
CREATION DATE | The date the data set was allocated. |
EXPIRATION DATE | The date the data set is to expire. |
MODIFICATION DATE | The date the data set was last updated. |
MODIFICATION TIME | The time the data set was last updated (This is Greenwich Mean Time). |
SMS INFORMATION | |
OWNER ID | The ID of the data set owner. |
STORAGE CLASS | The SMS Storage Class to be used to allocate the data set. The Storage Class is used to describe the hardware requirements of the data set. |
DATA CLASS | The SMS Data Class to be used to allocate the data set. The Data Class is used to describe the attributes of the data set such as RECFM, DSORG, LRECL, and BLKSIZE. |
MANAGEMENT CLASS | The SMS Management Class to be used to allocate the data set. The Management Class is used to describe the retention and migration backup for the data set. |
ENCRYPTION INFORMATION | |
KEYLABEL | (z/OS 2.3 and up) Identifies the name, up to 64 bytes, of the key label used to encrypt the data set. |
SPACE ALLOCATION INFORMATION | |
UNIT, PRIMARY, SECONDARY | Allocated area by UNIT type for data showing initial primary space and amount for secondary. |
ALLOCATED TRACKS | The amount of space allocated in tracks. |
USED TRACKS | The number of tracks and percent of data space used. |
ALLOCATED EXTENTS | The number of extents allocated. |
USED EXTENTS | The number of extents and the percent of extents used. |
DATA RECORDS | |
TOTAL | The number of records in the prime data area. |
DELETED | The number of records deleted. |
INSERTED | The number of records inserted. |
UPDATED | The number of records updated. |
RETRIEVED | The number of records retrieved from the data set since the last reorganization. |
OVERFLOW | The number of records overflowed. |
VOLUME INFORMATION | |
PHYS BLKSIZE | Size of each block written in a control area. |
PHYS BLKS/TRK | The number of blocks per track. |
HURBN | This the highest used block number currently in the IAM file. |
HARBN | This the highest allocated block number currently in the IAM file. |
HURBA | This the highest used RBA currently in the IAM file. |
HARBA | This the highest allocated RBA currently in the IAM file. |
OVERFLOW BLKS | The number of overflow blocks. |
PE BLOCKS | The number of prime extension blocks. |
EXT BLOCKS USED | The number of extended blocks used. |
EXT ALLOC | The number of allocated extended blocks. |
EXT BLOCKS AVAILABLE | The number of available extended blocks. |
CURRENT ORGANIZATION INFORMATION | |
SIMULATED CISZ | The simulated CI size in the organization. |
NUMBER OF CIS/CA | The number of control intervals in each control area. |
FREESPACE CA% | The percentage of free space in control area. |
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