Access method services

Table 1 lists changes to access method services (IDCAMS) commands related to DFSMStvs support.

Table 1. Changed IDCAMS commands. This table lists changes to access method services (IDCAMS) commands related to DFSMStvs support.
Command name	Release	Description	Related support
ALLOCATE	z/OS V1R4 or above	Changed parameter: BWO(TYPECICS) The TYPECICS option of the BWO parameter specifies backup-while-open (BWO) in a DFSMStvs environment. For RLS processing, this parameter activates BWO processing for DFSMStvs.	z/OS DFSMS Access Method Services Commands and z/OS DFSMStvs Planning and Operating Guide
		Changed parameter: DATACLAS CISIZE For DFSMStvs, specification of `n`*2 KB avoids wasting space in the coupling facility cache structure.
		Changed parameter: SHAREOPTIONS When you use DFSMStvs access, DFSMS assumes that the value of SHAREOPTIONS is (3,3).
ALTER	z/OS V1R4 or above	Changed parameter: BWO(TYPECICS) The TYPECICS option of the BWO parameter specifies backup-while-open (BWO) in a DFSMStvs environment. For RLS processing, this activates BWO processing for DFSMStvs.	z/OS DFSMS Access Method Services Commands and z/OS DFSMStvs Planning and Operating Guide
		Changed parameter: LOG Establishes whether the sphere to be accessed with DFSMStvs is recoverable or nonrecoverable. LOG(UNDO) specifies that changes to the sphere accessed in DFSMStvs mode can be backed out using an external log. DFSMStvs considers the sphere recoverable. LOG(ALL) specifies that changes to the sphere accessed in DFSMStvs mode can be backed out and forward recovered using an external log. DFSMStvs considers the sphere recoverable. LOGSTREAMID must also be defined.
		Changed parameter: LOGSTREAMID Changes or adds the name of the DFSMStvs forward recovery log stream, for all components in the VSAM sphere.
DEFINE ALTERNATEINDEX	z/OS V1R4 or above	Changed parameter: BUFFERSPACE When you use DFSMStvs access, DFSMS ignores the BUFFERSPACE parameter.	z/OS DFSMS Access Method Services Commands and z/OS DFSMStvs Planning and Operating Guide
		Changed parameter: CONTROLINTERVALSIZE For DFSMStvs, specification of `n`*2K avoids wasting space in the coupling facility cache structure.
		Changed parameter: KEYRANGES You cannot open key range data sets for DFSMStvs processing because DFSMS no longer supports this parameter.
		Changed parameter: SHAREOPTIONS When you use DFSMStvs access, DFSMS assumes that the value of SHAREOPTIONS is (3,3).
		Changed parameter: WRITECHECK When you use DFSMStvs access, DFSMS ignores the WRITECHECK parameter.
DEFINE CLUSTER z/OS V1R4 or above		Changed parameter: BUFFERSPACE When you use DFSMStvs access, DFSMS ignores the BUFFERSPACE parameter.	z/OS DFSMS Access Method Services Commands and z/OS DFSMStvs Planning and Operating Guide
		Changed parameter: BWO(TYPECICS) The TYPECICS option of the BWO parameter specifies backup-while-open (BWO) in a DFSMStvs environment. For RLS processing, this activates BWO processing for DFSMStvs.
		Changed parameter: CONTROLINTERVALSIZE For DFSMStvs, specification of `n`*2K avoids wasting space in the coupling-facility cache structure.
		Changed parameter: KEYRANGES You cannot open key range data sets for DFSMStvs processing because DFSMS no longer supports this parameter.
		Changed parameter: LOG Establishes whether the sphere to be accessed with DFSMStvs is recoverable or nonrecoverable. LOG(UNDO) specifies that changes to the sphere accessed in DFSMStvs mode can be backed out using an external log. DFSMStvs considers the sphere recoverable. LOG(ALL) specifies that changes to the sphere accessed in DFSMStvs mode can be backed out and forward recovered using an external log. DFSMStvs considers the sphere recoverable. LOGSTREAMID must also be defined. If you use LOG(NONE), DFSMStvs considers the sphere to be nonrecoverable.
		Changed parameter: LOGSTREAMID Changes or adds the name of the DFSMStvs forward recovery log stream, for all components in the VSAM sphere.
DEFINE CLUSTER (continued)		Changed parameter: SHAREOPTIONS When you use DFSMStvs access, DFSMS assumes that the value of SHAREOPTIONS is (3,3).
DEFINE CLUSTER (continued)		Changed parameter: WRITECHECK When you use DFSMStvs access, DFSMS ignores the WRITECHECK parameter.
DEFINE PATH	z/OS V1R4 or above	Changed parameter: NOUPDATE Has the same meaning for DFSMStvs as it does for RLS.	z/OS DFSMS Access Method Services Commands
SHCDS	z/OS V1R4 or above	Changed parameter: LISTDS A new, optional JOBS keyword returns a list of the jobs that currently access the data set in DFSMStvs mode.	Listing and controlling SMSVSAM recovery and z/OS DFSMStvs Planning and Operating Guide
		New parameter: LISTSHUNTED Lists information about work that was shunted due to an inability to complete a syncpoint (commit or backout) for a data set, a unit of recovery, or all shunted units of recovery.
		New parameter: PURGE Discards log entries and releases the associated locks, for use when a data set is damaged and you cannot restore it to a state that is consistent with the log entries.
		New parameter: RETRY Retries the syncpoint, for use when you can restore a data set to a state that is consistent with the log entries.