monOpenObjectActivity

Description

Provides statistics for all open tables and indexes.

Enable the enable monitoring configuration parameter for this monitoring table to collect data.

Columns

The columns for monOpenObjectActivity are:

Name

Datatype

Attributes

Description

DBID

int

Unique identifier for the database.

ObjectID

int

Unique identifier for the object.

IndexID

int

Unique identifier for the index..

InstanceID

int

(Cluster environments only) Unique identifier for an instance.

DBName

varchar(30)

Null

Name of the database in which the object resides

ObjectName

varchar(30)

Null

Name of the object.

LogicalReads

int

Counter, null

Total number of times a buffer for this object has been retrieved from a buffer cache without requiring a read from disk.

PhysicalReads

int

Counter, null

Number of buffers read from disk.

APFReads

int

Counter, null

Number of APF buffers read from disk.

PagesRead

int

Counter, null

Total number of pages read.

PhysicalWrites

int

Counter, null

Total number of buffers written to disk.

PagesWritten

int

Counter, null

Total number of pages written to disk.

RowsInserted

int

Counter, null

Number of rows inserted.

RowsDeleted

int

Counter, null

Number of rows deleted.

RowsUpdated

int

Counter, null

Number of updates.

Operations

int

Counter, null

Number of times the object was accessed.

LockRequests

int

Counter, null

Number of requests for a lock on the object.

LockWaits

int

Counter, null

Number of times a task waited for an object lock.

OptSelectCount

int

Counter, null

Number of times the optimizer selected this index to be used in a query plan.

LastOptSelectDate

datetime

Null

Last date the index was selected for a plan during compilation.

UsedCount

int

Counter, null

Number of times the object was used in a plan during execution.

LastUsedDate

datetime

Null

Last date the index was used in a plan during execution.

HkgcRequests

Total number of events queued for an object. A large value implies the system is generating large amounts of garbage for the specified object.

HkgcPending

The number of pending events for an object. A large value implies that a lot of garbage is yet to be collected, although the housekeeper will clean it up. If you reboot Adaptive Server, all entries in the housekeeper queue are lost, and the garbage from those pages is not collected when you restart Adaptive Server.

HkgcOverflows

The number of overflow object events. A large value implies the housekeeper queues are filling up. Generated garbage will not then be cleaned up because the housekeeper cannot schedule the job.

PhysicalLocks

int

(Cluster environments only) Number of physical locks requested per object.

PhsycialLocksRetained

int

(Cluster environments only) Number of physical locks retained. Use to identify the lock hit ratio for each object. Good hit ratios imply balanced partitioning for this object.

PhysicalLocksRetainWaited

int4

(Cluster environments only) Number of physical lock requests waiting before a lock is retained.

PhysicalLocksDeadlocks

int

(Cluster environments only) Number of times a requested physical lock returned a deadlock. The Cluster Physical Locks subsection of sp_sysmon uses this counter to report deadlocks while acquiring physical locks for each object.

PhysicalLocksWaited

int

(Cluster environments only) Number of times an instance waited for a physical lock request.

PhysicalLocksPageTransfer

int

(Cluster environments only) Number of page transfers that occurred when an instance requested a physical lock. The Cluster Physical Locks subsection of sp_sysmon uses this counter to report the node-to-node transfer and physical-lock acquisition as a node affinity ratio for this object

TransferReqWaited

int4

(Cluster environments only) Number of times physical lock requests waiting before receiving page transfers.

AvgPhysicalLocksWaitTime

int4

(Cluster environments only) Average amount of time clients spend before the physical lock is granted.

AvgTransferReqWaitTime

int4

(Cluster environments only) Average amount of time physical lock requests wait before receiving page transfers.

TotalServiceRequests

int4

(Cluster environments only) Number of physical lock requests serviced by the cluster cache manager of an instance.

PhysicalLocksDowngraded

int4

(Cluster environments only) Number of physical lock downgrade requests serviced by the cluster cache manager of an instance.

PagesTransferred

int4

(Cluster environments only) Number of pages transferred at an instance by the cluster cache manager.

ClusterPageWrites

int4

(Cluster environments only) Number of pages written to disk by the cluster cache manager of an instance.

AvgServiceTime

int4

(Cluster environments only) Average amount of service time spent by the cluster cache manager of an instance.

AvgTimeWaitedOnLocalUsers

int4

(Cluster environments only) Average amount of service time an instance’s cluster cache manager waits due to page use by users on this instance.

AvgTransferSendWaitTime

int4

(Cluster environments only) Average amount of service time an instance’s cluster cache manager spends for page transfer.

AvgIOServiceTime

int4

(Cluster environments only) Average amount of service time used by an instance’s cluster cache manager for page transfer.

AvgDowngradeServiceTime

int4

(Cluster environments only) Average amount of service time the cluster cache manager uses to downgrade physical locks.

SharedLockWaitTime

int

Counter, reset, null

The total amount of time, in milliseconds, that all tasks spent waiting for a shared lock

ExclusiveLockWaitTime

int

Counter, reset, null

The total amount of time, in milliseconds, that all tasks spent waiting for an exclusive lock

UpdateLockWaitTime

int

Counter, reset, null

The total amount of time, in milliseconds, that all tasks spent waiting for an update lock

ObjectCacheDate

datetime

Counter, reset, null

Indicates the date and time when the object was added to the cache

NoteThe value of OptSelectCount may be less than that of UsedCount since you can use the plan for a stored procedure or trigger multiple times. Also, because Adaptive Server may decide not to execute certain portions of a query plan during execution, UsedCount may be less than OptSelectCount.