LockStats (Oracle - Berkeley DB Java API)

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Berkeley DB
version 5.3.28

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com.sleepycat.db
Class LockStats

java.lang.Object
  com.sleepycat.db.LockStats

public class LockStats
extends Object
extends Object

Lock statistics for a database environment.

Method Summary
`int`	`getCurMaxId()` The current maximum unused locker ID.
`int`	`getHashLen()` Maximum length of a lock hash bucket.
`int`	`getId()` The last allocated locker ID.
`int`	`getInitlockers()` The initial number of lockers allocated in lock table.
`int`	`getInitlocks()` The initial number of locks allocated in the lock table.
`int`	`getInitobjects()` The initial number of lock objects allocated in lock table.
`int`	`getLockers()` The current number of lockers allocated in lock table.
`long`	`getLockersNowait()` The number of requests to allocate or deallocate a locker for which the thread of control did not wait.
`long`	`getLockersWait()` The number of requests to allocate or deallocate a locker for which the thread of control waited.
`long`	`getLockNowait()` The number of lock requests not immediately available due to conflicts, for which the thread of control did not wait.
`int`	`getLocks()` The current number of locks allocated in lock table.
`long`	`getLocksteals()` The maximum number of locks stolen by an empty partition.
`int`	`getLockTimeout()` Lock timeout value.
`long`	`getLockWait()` The number of lock requests not immediately available due to conflicts, for which the thread of control waited.
`int`	`getMaxHlocks()` The maximum number of locks in any hash bucket at any one time.
`int`	`getMaxHobjects()` The maximum number of objects in any hash bucket at any one time.
`int`	`getMaxLockers()` The maximum number of lockers possible.
`int`	`getMaxLocks()` The maximum number of locks possible.
`long`	`getMaxLsteals()` The maximum number of lock steals for any one partition.
`int`	`getMaxNlockers()` The maximum number of lockers at any one time.
`int`	`getMaxNlocks()` The maximum number of locks at any one time.
`int`	`getMaxNobjects()` The maximum number of lock objects at any one time.
`int`	`getMaxObjects()` The maximum number of lock objects possible.
`long`	`getMaxOsteals()` The maximum number of object steals for any one partition.
`int`	`getNobjects()` The number of current lock objects.
`long`	`getNumDeadlocks()` The number of deadlocks.
`long`	`getNumDowngrade()` The total number of locks downgraded.
`int`	`getNumLockers()` The number of current lockers.
`int`	`getNumLocks()` The number of current locks.
`long`	`getNumLockTimeouts()` The number of lock requests that have timed out.
`int`	`getNumModes()` The number of lock modes.
`long`	`getNumReleases()` The total number of locks released.
`long`	`getNumRequests()` The total number of locks requested.
`long`	`getNumTxnTimeouts()` The number of transactions that have timed out.
`long`	`getNumUpgrade()` The total number of locks upgraded.
`int`	`getObjects()` The current number of lock objects allocated in lock table.
`long`	`getObjectsteals()` The maximum number of objects stolen by an empty partition.
`long`	`getObjsNowait()` The number of requests to allocate or deallocate an object for which the thread of control did not wait.
`long`	`getObjsWait()` The number of requests to allocate or deallocate an object for which the thread of control waited.
`int`	`getPartitions()` The number of lock table partitions.
`long`	`getPartMaxNowait()` The number of times that a thread of control was able to obtain any one lock partition mutex without waiting.
`long`	`getPartMaxWait()` The maximum number of times that a thread of control was forced to wait before obtaining any one lock partition mutex.
`long`	`getPartNowait()` The number of times that a thread of control was able to obtain a lock partition mutex without waiting.
`long`	`getPartWait()` The number of times that a thread of control was forced to wait before obtaining a lock partition mutex.
`long`	`getRegionNowait()` The number of times that a thread of control was able to obtain the region lock without waiting.
`long`	`getRegionWait()` The number of times that a thread of control was forced to wait before obtaining the region lock.
`long`	`getRegSize()` The size of the lock region.
`int`	`getTableSize()` The size of object hash table.
`int`	`getTxnTimeout()` Transaction timeout value.
`String`	`toString()` For convenience, the LockStats class has a toString method that lists all the data fields.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Method Detail

getId

public int getId()

The last allocated locker ID.

getCurMaxId

public int getCurMaxId()

The current maximum unused locker ID.

getInitlocks

public int getInitlocks()

The initial number of locks allocated in the lock table.

getInitlockers

public int getInitlockers()

The initial number of lockers allocated in lock table.

getInitobjects

public int getInitobjects()

The initial number of lock objects allocated in lock table.

getLocks

public int getLocks()

The current number of locks allocated in lock table.

getLockers

public int getLockers()

The current number of lockers allocated in lock table.

getObjects

public int getObjects()

The current number of lock objects allocated in lock table.

getMaxLocks

public int getMaxLocks()

The maximum number of locks possible.

getMaxLockers

public int getMaxLockers()

The maximum number of lockers possible.

getMaxObjects

public int getMaxObjects()

The maximum number of lock objects possible.

getPartitions

public int getPartitions()

The number of lock table partitions.

getTableSize

public int getTableSize()

The size of object hash table.

getNumModes

public int getNumModes()

The number of lock modes.

getNumLockers

public int getNumLockers()

The number of current lockers.

getNumLocks

public int getNumLocks()

The number of current locks.

getMaxNlocks

public int getMaxNlocks()

The maximum number of locks at any one time. Note that if there is more than one partition, this is the sum of the maximum across all partitions.

getMaxHlocks

public int getMaxHlocks()

The maximum number of locks in any hash bucket at any one time.

getLocksteals

public long getLocksteals()

The maximum number of locks stolen by an empty partition.

getMaxLsteals

public long getMaxLsteals()

The maximum number of lock steals for any one partition.

getMaxNlockers

public int getMaxNlockers()

The maximum number of lockers at any one time.

getNobjects

public int getNobjects()

The number of current lock objects.

getMaxNobjects

public int getMaxNobjects()

The maximum number of lock objects at any one time. Note that if there is more than one partition this is the sum of the maximum across all partitions.

getMaxHobjects

public int getMaxHobjects()

The maximum number of objects in any hash bucket at any one time.

getObjectsteals

public long getObjectsteals()

The maximum number of objects stolen by an empty partition.

getMaxOsteals

public long getMaxOsteals()

The maximum number of object steals for any one partition.

getNumRequests

public long getNumRequests()

The total number of locks requested.

getNumReleases

public long getNumReleases()

The total number of locks released.

getNumUpgrade

public long getNumUpgrade()

The total number of locks upgraded.

getNumDowngrade

public long getNumDowngrade()

The total number of locks downgraded.

getLockWait

public long getLockWait()

The number of lock requests not immediately available due to conflicts, for which the thread of control waited.

getLockNowait

public long getLockNowait()

The number of lock requests not immediately available due to conflicts, for which the thread of control did not wait.

getNumDeadlocks

public long getNumDeadlocks()

The number of deadlocks.

getLockTimeout

public int getLockTimeout()

Lock timeout value.

getNumLockTimeouts

public long getNumLockTimeouts()

The number of lock requests that have timed out.

getTxnTimeout

public int getTxnTimeout()

Transaction timeout value.

getNumTxnTimeouts

public long getNumTxnTimeouts()

The number of transactions that have timed out. This value is also a component of st_ndeadlocks, the total number of deadlocks detected.

getPartWait

public long getPartWait()

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

getPartNowait

public long getPartNowait()

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

getPartMaxWait

public long getPartMaxWait()

The maximum number of times that a thread of control was forced to wait before obtaining any one lock partition mutex.

getPartMaxNowait

public long getPartMaxNowait()

The number of times that a thread of control was able to obtain any one lock partition mutex without waiting.

getObjsWait

public long getObjsWait()

The number of requests to allocate or deallocate an object for which the thread of control waited.

getObjsNowait

public long getObjsNowait()

The number of requests to allocate or deallocate an object for which the thread of control did not wait.

getLockersWait

public long getLockersWait()

The number of requests to allocate or deallocate a locker for which the thread of control waited.

getLockersNowait

public long getLockersNowait()

The number of requests to allocate or deallocate a locker for which the thread of control did not wait.

getRegionWait

public long getRegionWait()

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

getRegionNowait

public long getRegionNowait()

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

getHashLen

public int getHashLen()

Maximum length of a lock hash bucket.

getRegSize

public long getRegSize()

The size of the lock region.

toString

public String toString()

For convenience, the LockStats class has a toString method that lists all the data fields.

Overrides:: toString in class Object