com.sleepycat.db
Class TransactionStats

java.lang.Object
  com.sleepycat.db.TransactionStats

public class TransactionStats
extends Object

Transaction statistics for a database environment.

Nested Class Summary

static class

TransactionStats.Active The Active class represents an active transaction.

Method Summary

LogSequenceNumber	getLastCkp() The LSN of the last checkpoint.
int	getLastTxnId() The last transaction ID allocated.
int	getMaxNactive() The maximum number of active transactions at any one time.
int	getMaxNsnapshot() The maximum number of transactions on the snapshot list at any one time.
int	getMaxTxns() The maximum number of active transactions configured.
int	getNaborts() The number of transactions that have aborted.
int	getNactive() The number of transactions that are currently active.
int	getNumBegins() The number of transactions that have begun.
int	getNumCommits() The number of transactions that have committed.
int	getNumRestores() The number of transactions that have been restored.
int	getNumSnapshot() The number of transactions on the snapshot list.
int	getRegionNowait() The number of times that a thread of control was able to obtain the region lock without waiting.
int	getRegionWait() The number of times that a thread of control was forced to wait before obtaining the region lock.
int	getRegSize() The size of the region.
long	getTimeCkp() The time the last completed checkpoint finished (as the number of seconds since the Epoch, returned by the IEEE/ANSI Std 1003.1 (POSIX) time interface).
TransactionStats.Active[]	getTxnarray() The array of active transactions.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getLastCkp

public LogSequenceNumber getLastCkp()

The LSN of the last checkpoint.

getTimeCkp

public long getTimeCkp()

The time the last completed checkpoint finished (as the number of seconds since the Epoch, returned by the IEEE/ANSI Std 1003.1 (POSIX) time interface).

getLastTxnId

public int getLastTxnId()

The last transaction ID allocated.

getMaxTxns

public int getMaxTxns()

The maximum number of active transactions configured.

getNaborts

public int getNaborts()

The number of transactions that have aborted.

getNumBegins

public int getNumBegins()

The number of transactions that have begun.

getNumCommits

public int getNumCommits()

The number of transactions that have committed.

getNactive

public int getNactive()

The number of transactions that are currently active.

getNumSnapshot

public int getNumSnapshot()

The number of transactions on the snapshot list. These are transactions which modified a database opened with DatabaseConfig.setMultiversion(boolean), and which have committed or aborted, but the copies of pages they created are still in the cache.

getNumRestores

public int getNumRestores()

The number of transactions that have been restored.

getMaxNactive

public int getMaxNactive()

The maximum number of active transactions at any one time.

getMaxNsnapshot

public int getMaxNsnapshot()

The maximum number of transactions on the snapshot list at any one time.

getRegionWait

public int getRegionWait()

The number of times that a thread of control was forced to wait before obtaining the region lock.

getRegionNowait

public int getRegionNowait()

The number of times that a thread of control was able to obtain the region lock without waiting.

getRegSize

public int getRegSize()

The size of the region.

getTxnarray

public TransactionStats.Active[] getTxnarray()

The array of active transactions.

toString

public String toString()

Overrides:

toString in class Object