/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.jmx;
/**
* Information and management operations for the given database.
*
* @author Eric Dong
* @author Thomas Mueller
*/
public interface DatabaseInfoMBean {
/**
* Is the database open in exclusive mode?
*
* @return true if the database is open in exclusive mode, false otherwise
*/
boolean isExclusive();
/**
* Is the database read-only?
*
* @return true if the database is read-only, false otherwise
*/
boolean isReadOnly();
/**
* The database compatibility mode (REGULAR if no compatibility mode is
* used).
*
* @return the database mode
*/
String getMode();
/**
* The number of write operations since the database was opened.
*
* @return the write count
*/
long getFileWriteCount();
/**
* The file read count since the database was opened.
*
* @return the read count
*/
long getFileReadCount();
/**
* The database file size in KB.
*
* @return the number of pages
*/
long getFileSize();
/**
* The maximum cache size in KB.
*
* @return the maximum size
*/
int getCacheSizeMax();
/**
* Change the maximum size.
*
* @param kb the cache size in KB.
*/
void setCacheSizeMax(int kb);
/**
* The current cache size in KB.
*
* @return the current size
*/
int getCacheSize();
/**
* The database version.
*
* @return the version
*/
String getVersion();
/**
* The trace level (0 disabled, 1 error, 2 info, 3 debug).
*
* @return the level
*/
int getTraceLevel();
/**
* Set the trace level.
*
* @param level the new value
*/
void setTraceLevel(int level);
/**
* List the database settings.
*
* @return the database settings
*/
String listSettings();
/**
* List sessions, including the queries that are in
* progress, and locked tables.
*
* @return information about the sessions
*/
String listSessions();
}