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Lock Manager

Lock Manager can lock areas in the cluster. An area refers to a set of keys that connects to a distributed resource and locks it. This manager is used to synchronize the usage of specific areas in the cluster.

Visual Administrator

Properties

 

Dispatcher

 

Property

Description

Default Value

 

 

 

lmSleepIntervalMillis

This parameter specifies the time interval in milliseconds between the attempts to connect to a primary server for a particular lock area, if the first attempt has failed. The reason for this failure might be primary lock server crash.

42

NegotiateSleepIntervalMillis

In case of a crash of a primary server for a particular lock area, a new primary server should be specified. This parameter sets the time interval between successive calls from a server in a cluster to determine a primary server for storing lock information. Calls are repeated until the server with the smallest load number becomes primary server for the lock area. Load number is determined randomly.

92

ErrorLogFileName

Specifies the filename to which error log messages for Lock Manager are written.

./managers/log /lock/ERROR.log

CriticalLogLevel

Specifies the types of log messages that have critical priority. It is a number from 0 to 7 specifying that log messages within [CriticalLogLevel,7] are written in the DefaultCriticalFile.

3

NormalLogFileName

This parameter specifies the filename to which messages with normal priority are written. This file is used by the Log viewer of the system to display the messages.

./managers/log/lock/NORMAL.log

InfoLogFileName

Specifies the filename to which info log messages for Lock Manager are written.

./managers/log /lock/INFO.log

CriticalLogFileName

Specifies the filename to which critical log messages are written.

./managers/log /lock/CRITICAL.log

DebugLogFileName

Specifies the filename to which debug log messages for Lock Manager are written.

./managers/log /lock/DEBUG.log

NoticeLogFileName

Specifies the filename to which notice log messages for Lock Manager are written.

 

./managers/log /lock/NOTICE.log

WarningLogFileName

Specifies the filename to which warning log= messages for Lock Manager are written.

./managers/log /lock/WARNING.log

UnicodeLog

This is a boolean flag specifying whether to write log records in UNICODE.

true

SAP_J2EE_Engine_Version

Specifies the version of SAP J2EE Engine.

 

 

 

Server

 

Property

Description

Default Value

 

 

 

lmSleepIntervalMillis

This parameter specifies the time interval in milliseconds between the attempts to connect to a primary server for a particular lock area, if the first attempt has failed. The reason for this failure might be primary lock server crash.

42

NegotiateSleepIntervalMillis

In case of a crash of a primary server for a particular lock area, a new primary server should be specified. This parameter sets the time interval between successive calls from a server in a cluster to determine a primary server for storing lock information. Calls are repeated until the server with the smallest load number becomes primary server for the lock area. Load number is determined randomly.

92

ErrorLogFileName

Specifies the filename to which error log messages for Lock Manager are written.

./managers/log /lock/ERROR.log

CriticalLogLevel

Specifies the types of log messages that have critical priority. It is a number from 0 to 7 specifying that log messages within [CriticalLogLevel,7] are written in the DefaultCriticalFile.

3

NormalLogFileName

This parameter specifies the filename to which messages with normal priority are written. This file is used by the Log viewer of the system to display the messages.

./managers/log/lock/NORMAL.log

InfoLogFileName

Specifies the filename to which info log messages for Lock Manager are written.

./managers/log /lock/INFO.log

CriticalLogFileName

Specifies the filename to which critical log messages are written.

./managers/log /lock/CRITICAL.log

DebugLogFileName

Specifies the filename to which debug log messages for Lock Manager are written.

./managers/log /lock/DEBUG.log

NoticeLogFileName

Specifies the filename to which notice log messages for Lock Manager are written.

 

./managers/log /lock/NOTICE.log

WarningLogFileName

Specifies the filename to which warning log messages for Lock Manager are written.

./managers/log /lock/WARNING.log

UnicodeLog

This is a boolean flag specifying whether to write log records in UNICODE.

true

SAP_J2EE_Engine_Version

Specifies the version of SAP J2EE Engine.

 

Property Files

../cluster/dispatcher/managers/settings/LockManager.properties
Lock Manager properties specified in the Visual Administration section can be set from this file as well.

../cluster/server/managers/settings/LockManager.properties
Lock Manager properties specified in the Visual Administration section can be set from this file as well.

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