org.h2.jmx

接口 DatabaseInfoMBean

所有已知实现类:

DatabaseInfo

public interface DatabaseInfoMBean

Information and management operations for the given database.

作者:

Eric Dong, Thomas Mueller

方法概要

限定符和类型	方法和说明
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.
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.

方法详细资料

isExclusive

boolean isExclusive()

Is the database open in exclusive mode?

返回:

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

isReadOnly

boolean isReadOnly()

Is the database read-only?

返回:

true if the database is read-only, false otherwise

getMode

String getMode()

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

返回:

the database mode

isMultiThreaded

boolean isMultiThreaded()

Is multi-threading enabled?

返回:

true if multi-threading is enabled, false otherwise

isMvcc

boolean isMvcc()

Is MVCC (multi version concurrency) enabled?

返回:

true if MVCC is enabled, false otherwise

getLogMode

int getLogMode()

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

返回:

the transaction log mode

setLogMode

void setLogMode(int value)

Set the transaction log mode.

参数:

value - the new log mode

getFileWriteCountTotal

long getFileWriteCountTotal()

The number of write operations since the database was created.

返回:

the total write count

getFileWriteCount

long getFileWriteCount()

The number of write operations since the database was opened.

返回:

the write count

getFileReadCount

long getFileReadCount()

The file read count since the database was opened.

返回:

the read count

getFileSize

long getFileSize()

The database file size in KB.

返回:

the number of pages

getCacheSizeMax

int getCacheSizeMax()

The maximum cache size in KB.

返回:

the maximum size

setCacheSizeMax

void setCacheSizeMax(int kb)

Change the maximum size.

参数:

kb - the cache size in KB.

getCacheSize

int getCacheSize()

The current cache size in KB.

返回:

the current size

getVersion

String getVersion()

The database version.

返回:

the version

getTraceLevel

int getTraceLevel()

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

返回:

the level

setTraceLevel

void setTraceLevel(int level)

Set the trace level.

参数:

level - the new value

listSettings

String listSettings()

List the database settings.

返回:

the database settings

listSessions

String listSessions()

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

返回:

information about the sessions