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92 VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
Journal Definition (JRNDEF) Control Statement
The JRNDEF control statement provides static information to the HSC. This information
is used by the HSC at initialization and remains for the life of the HSC execution. Control
information provided to the HSC by JRNDEF includes:
• the name for HSC journal data sets
Note: If your recovery technique involves using journals, both journal data sets are
required. HSC will not initialize if only one journal data set is provided.
• the DASD volume where the specified journal resides
• the unitname for the dynamic allocation parameter list for journal allocation
• journal full options.
In a multi-host complex, a separate JRNDEF statement is required for each host. Refer to
“CDS Definition (CDSDEF) Control Statement” on page 87 for information about
defining CDS files.
Syntax
Control Statement Name
JRNDEF initiates the control statement.
Parameters
DSNx
dataset.name is the name of an HSC journal data set. If journaling is active, each
HSC host that comes active must find a JRNDEF statement in PARMLIB with a
HOSTID that matches the system where it is running. Each JRNDEF statement must
specify two distinct journal DSNs.
Journal data sets cannot be shared between hosts.
VOLx
optionally, volser is the volume serial number of the DASD volume where the
specified journal resides. The VOL parameter must be specified in VM.
JRNDEF DSN1(dataset.name)
,VOL1(volser),UNIT1(unitname)
,DSN2(dataset.name)
,VOL2(volser),UNIT2(unitname)
,FULL(
Abend
Continue
,HOSTID(host-id)
JRNDEF