Operations Guide

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lockmgr Utility

This utility performs the following tasks:

Deletes a group of locks that have a common unique identifier (

Lists all the application locks for a system in ascending order by

Lists the current Rulebase host in a Rulebase Server Group.

The lockmgr utility uses the following syntax:

%SSABIN%\lockmgr [list|del uq] -rRbName -hRbHost [-vpsu] [-l]

You must specify either the

list

del uq

option. Use the

list

option to list the application locks and their unique identifier values or the current Rulebase host. Use the

del uq

option to delete a group of locks that have a common unique identifier.

You can use the Rulebase Server connection details by using the

-h

option or the Rulebase Server Group name by using the

-g

option. You can use the

-l

option in conjunction with the

-g

option to list the Rulebase Server connection details in the

host:port

format.

The following example lists all the application locks for a system:

%SSABIN%\lockmgr list -rodb:0:userid/password@dbserver -hlocalhost:1668

sorted locks: 
uq: updsync,1,1:1370482219:6150 
  obj: idtsync 
    id: system=mdm_customer idt= 
      type: w 
      lock: ip=127.0.33.1 pid=4560 host='rb.informatica.com' ps='2013/06/06 01:30:18.2132' 
uq: updsync,1,1:1370482219:6150 
  obj: idtsyncsystem 
    id: system=mdm_customer 
      type: r 
      lock: ip=127.0.0.1 pid=4560 host='rb.informatica.com' ps='2013/06/06 01:30:18.2132'

The following example deletes a group of locks based on the specified common unique identifier:

%SSABIN%\lockmgr del updsync,1,1:1370482219:6150 -rodb:0:userid/password@dbserver -hlocalhost:1668

You must use this utility with caution. Removing the locks from a running process, such as Update Synchronizer, that requires exclusive use of certain system resources might lead to data corruption and errors.

If a process detects a conflicting lock, it tries to find out the status of the job that created the lock. It deletes the locks and creates its own if the original process has crashed.

In some instances, the new process might not be able find out the status of the original process. For example, if the original process runs on a different computer or is unresponsive. The

lockmgr

utility is useful in such scenarios to remove the lock manually.

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