org.h2.jmx

Class DatabaseInfo

java.lang.Object

org.h2.jmx.DatabaseInfo

All Implemented Interfaces:

DatabaseInfoMBean

public class DatabaseInfo
extends Object
implements DatabaseInfoMBean

The MBean implementation.

Author:

Eric Dong, Thomas Mueller

Method Summary

Methods

Modifier and Type	Method and Description
int	getCacheSize() The current cache size in KB.
int	getCacheSizeMax() The maximum cache size in KB.
long	getFileReadCount() The file read count since the database was opened.
long	getFileSize() The database file size in KB.
long	getFileWriteCount() The number of write operations since the database was opened.
long	getFileWriteCountTotal() The number of write operations since the database was created.
int	getLogMode() The transaction log mode (0 disabled, 1 without sync, 2 enabled).
String	getMode() The database compatibility mode (REGULAR if no compatibility mode is used).
int	getTraceLevel() The trace level (0 disabled, 1 error, 2 info, 3 debug).
String	getVersion() The database version.
boolean	isExclusive() Is the database open in exclusive mode?
boolean	isMultiThreaded() Is multi-threading enabled?
boolean	isMvcc() Is MVCC (multi version concurrency) enabled?
boolean	isReadOnly() Is the database read-only?
String	listSessions() List sessions, including the queries that are in progress, and locked tables.
String	listSettings() List the database settings.
static void	registerMBean(ConnectionInfo connectionInfo, Database database) Registers an MBean for the database.
void	setCacheSizeMax(int kb) Change the maximum size.
void	setLogMode(int value) Set the transaction log mode.
void	setTraceLevel(int level) Set the trace level.
static void	unregisterMBean(String name) Unregisters the MBean for the database if one is registered.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

registerMBean

public static void registerMBean(ConnectionInfo connectionInfo,
                 Database database)
                          throws JMException

Registers an MBean for the database.

Parameters:

connectionInfo - connection info

database - database

Throws:

JMException

unregisterMBean

public static void unregisterMBean(String name)
                            throws Exception

Unregisters the MBean for the database if one is registered.

Parameters:

name - database name

Throws:

Exception

isExclusive

public boolean isExclusive()

Description copied from interface: DatabaseInfoMBean

Is the database open in exclusive mode?

Specified by:

isExclusive in interface DatabaseInfoMBean

Returns:

true if the database is open in exclusive mode, false otherwise

isReadOnly

public boolean isReadOnly()

Description copied from interface: DatabaseInfoMBean

Is the database read-only?

Specified by:

isReadOnly in interface DatabaseInfoMBean

Returns:

true if the database is read-only, false otherwise

getMode

public String getMode()

Description copied from interface: DatabaseInfoMBean

The database compatibility mode (REGULAR if no compatibility mode is used).

Specified by:

getMode in interface DatabaseInfoMBean

Returns:

the database mode

isMultiThreaded

public boolean isMultiThreaded()

Description copied from interface: DatabaseInfoMBean

Is multi-threading enabled?

Specified by:

isMultiThreaded in interface DatabaseInfoMBean

Returns:

true if multi-threading is enabled, false otherwise

isMvcc

public boolean isMvcc()

Description copied from interface: DatabaseInfoMBean

Is MVCC (multi version concurrency) enabled?

Specified by:

isMvcc in interface DatabaseInfoMBean

Returns:

true if MVCC is enabled, false otherwise

getLogMode

public int getLogMode()

Description copied from interface: DatabaseInfoMBean

The transaction log mode (0 disabled, 1 without sync, 2 enabled).

Specified by:

getLogMode in interface DatabaseInfoMBean

Returns:

the transaction log mode

setLogMode

public void setLogMode(int value)

Description copied from interface: DatabaseInfoMBean

Set the transaction log mode.

Specified by:

setLogMode in interface DatabaseInfoMBean

Parameters:

value - the new log mode

getTraceLevel

public int getTraceLevel()

Description copied from interface: DatabaseInfoMBean

The trace level (0 disabled, 1 error, 2 info, 3 debug).

Specified by:

getTraceLevel in interface DatabaseInfoMBean

Returns:

the level

setTraceLevel

public void setTraceLevel(int level)

Description copied from interface: DatabaseInfoMBean

Set the trace level.

Specified by:

setTraceLevel in interface DatabaseInfoMBean

Parameters:

level - the new value

getFileWriteCountTotal

public long getFileWriteCountTotal()

Description copied from interface: DatabaseInfoMBean

The number of write operations since the database was created.

Specified by:

getFileWriteCountTotal in interface DatabaseInfoMBean

Returns:

the total write count

getFileWriteCount

public long getFileWriteCount()

Description copied from interface: DatabaseInfoMBean

The number of write operations since the database was opened.

Specified by:

getFileWriteCount in interface DatabaseInfoMBean

Returns:

the write count

getFileReadCount

public long getFileReadCount()

Description copied from interface: DatabaseInfoMBean

The file read count since the database was opened.

Specified by:

getFileReadCount in interface DatabaseInfoMBean

Returns:

the read count

getFileSize

public long getFileSize()

Description copied from interface: DatabaseInfoMBean

The database file size in KB.

Specified by:

getFileSize in interface DatabaseInfoMBean

Returns:

the number of pages

getCacheSizeMax

public int getCacheSizeMax()

Description copied from interface: DatabaseInfoMBean

The maximum cache size in KB.

Specified by:

getCacheSizeMax in interface DatabaseInfoMBean

Returns:

the maximum size

setCacheSizeMax

public void setCacheSizeMax(int kb)

Description copied from interface: DatabaseInfoMBean

Change the maximum size.

Specified by:

setCacheSizeMax in interface DatabaseInfoMBean

Parameters:

kb - the cache size in KB.

getCacheSize

public int getCacheSize()

Description copied from interface: DatabaseInfoMBean

The current cache size in KB.

Specified by:

getCacheSize in interface DatabaseInfoMBean

Returns:

the current size

getVersion

public String getVersion()

Description copied from interface: DatabaseInfoMBean

The database version.

Specified by:

getVersion in interface DatabaseInfoMBean

Returns:

the version

listSettings

public String listSettings()

Description copied from interface: DatabaseInfoMBean

List the database settings.

Specified by:

listSettings in interface DatabaseInfoMBean

Returns:

the database settings

listSessions

public String listSessions()

Description copied from interface: DatabaseInfoMBean

List sessions, including the queries that are in progress, and locked tables.

Specified by:

listSessions in interface DatabaseInfoMBean

Returns:

information about the sessions