Technical data

System Dump Analyzer

SHOW LOCK

Displays information about all lock management locks in the system, cached

locks, or a speciﬁed lock.

Format

SHOW LOCK {lock-id | /ALL | /CACHED | /NAME=resource-name}

Parameters

lock-id

Name of a speciﬁc lock. You cannot specify both a lock-id and a resource-name

in the same command line.

Qualiﬁers

/ALL

Lists all locks that exist in the system. This is the default behavior of the SHOW

LOCK command.

/CACHED

Shows only cached lock blocks (LKBs).

/NAME=resource-name

Displays information about the resource associated with the lock whose resource

name begins with the speciﬁed resource-name. For case-sensitive names,

enclose the resource-name in quotation marks. You cannot specify both a

lock-id and resource-name in the same command line.

Description

The SHOW LOCK command displays the information described in Table SDA–15

for each lock management lock in the system or for the lock indicated by lock-id.

(Use the SHOW SPINLOCK command to display information about spin locks.)

You can obtain a similar display for the locks owned by a speciﬁc process by

issuing the appropriate SHOW PROCESS/LOCKS command. See the OpenVMS

System Services Reference Manual for additional discussion of the signiﬁcance of

this information.

You can display information about the resource to which a lock is queued by

issuing the SHOW RESOURCE command and specifying the lock-id of the

resource.

SDA–121