SOME DEFINITIONS.

SOME DEFINITIONS.

keys :

keys(length offset)

e.g. key(8 1) starting from 2nd byte to 9th byte

spanned

it allows record to span more than one control interval

Dataset type

indexed (for ksds) key sequenced dataset

nonindexed (for esds) entry sequenced dataset

numbered (for rrds) relative record dataset

freespace

it applies to ksds.it can be used for adding new records or expanding existing variable records.

space parameter:

cylinders(primary secondary)

tracks (primary secondary)

records (primary secondary)

kilobytes(primary secondary)

megabytes(primary secondary)

reuse

reuse specifies that cluster can be opened next time as a reusable

cluster.if it is opened in output mode it is treated as empty dataset.

share options (cr-value cs-value)

values: 1 multiple read or single write

2 multiple read and single write

3 multiple read and multiple write

cr value: specifies value for cross region sharing.

cross region sharing is defined as different jobs

running on the same system using global resource

serialization,a resource control facility.

cs value: specifies the value for cross system sharing

means different jobs running on different system in

a nongrs environment.

Listcat:

helps to view password and security information, usage statistics, space allocation info, creation and expiration dates etc

NOTE:-The following attributes are unalterable. You have to DELETE the cluster and redefine it with new attributes.

- CISZ

- Cluster type,

- IMBED/REPLICATE

- REUSE | NOREUSE