WSSessionManagementStats (IBM WebSphere Application Server, Release 9.0)

```
public interface WSSessionManagementStats
```
WebSphere Servlet Session Manager Stats interface. Servlet Session Manager stats are structured as follows in the PMI tree:

<server>
|
|__Servlet Session Manager+
  |
  |__<web_application_1>
  |__<web_application_1>

+ indicates logical group

StatDescriptor is used to locate and access particular Stats in the PMI tree.
Example:
1. StatDescriptor that represents the Servlet session manager stats logical group: new StatDescriptor (new String[] {WSSessionManagementStats.NAME});
2. StatDescriptor that represents the Servlet session stats for a given web application <web_application_1>: new StatDescriptor (new String[] {WSSessionManagementStats.NAME, "web_application_1"});

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ActivateNonExistSessionCount` The number of requests for a session that no longer exists, presumably because the session timed out (CountStatistic).
`static int`	`ActiveCount` Total number of sessions that are currently accessed by requests (RangeStatistic).
`static int`	`AffinityBreakCount` The number of HTTP session affinities that are broken, not counting WebSphere Application Server intentional breaks of session affinity (CountStatistic).
`static int`	`CacheDiscardCount` The number of session objects that are forced out of the cache (CountStatistic).
`static int`	`CreateCount` Total number of sessions that are created (CountStatistic).
`static int`	`ExternalReadSize` The size of the session data read from persistent store (TimeStatistic).
`static int`	`ExternalReadTime` The time (in milliseconds) taken in reading the session data from persistent store (TimeStatistic).
`static int`	`ExternalWriteSize` The size of the session data written to persistent store (AverageStatistic).
`static int`	`ExternalWriteTime` The time (in milliseconds) taken in writing the session data from persistent store (AverageStatistic).
`static int`	`InvalidateCount` Total number of sessions that are invalidated (CountStatistic).
`static int`	`LifeTime` Average session lifetime in milliseconds - TimeStatistic (time invalidated - time created).
`static int`	`LiveCount` Total number of sessions that are currently live (RangeStatistic).
`static java.lang.String`	`NAME`
`static int`	`NoRoomForNewSessionCount` The number of times that a request for a new session cannot be handled because the value exceeds the maximum session count (CountStatistic).
`static int`	`SessionObjectSize` The average size of the session objects at session level, including only serializable attributes in the cache (AverageStatistic).
`static int`	`TimeoutInvalidationCount` The number of sessions that are invalidated with timeout (CountStatistic).
`static int`	`TimeSinceLastActivated` The time difference in milliseconds of the previous and current access time stamps (TimeStatistic).

- Field Detail
  - NAME
```
static final java.lang.String NAME
```
    See Also:
    Constant Field Values
  - CreateCount
```
static final int CreateCount
```
    Total number of sessions that are created (CountStatistic).
    
    See Also:
    Constant Field Values
  - InvalidateCount
```
static final int InvalidateCount
```
    Total number of sessions that are invalidated (CountStatistic).
    
    See Also:
    Constant Field Values
  - LifeTime
```
static final int LifeTime
```
    Average session lifetime in milliseconds - TimeStatistic (time invalidated - time created).
    
    See Also:
    Constant Field Values
  - ActiveCount
```
static final int ActiveCount
```
    Total number of sessions that are currently accessed by requests (RangeStatistic).
    
    See Also:
    Constant Field Values
  - LiveCount
```
static final int LiveCount
```
    Total number of sessions that are currently live (RangeStatistic).
    
    See Also:
    Constant Field Values
  - NoRoomForNewSessionCount
```
static final int NoRoomForNewSessionCount
```
    The number of times that a request for a new session cannot be handled because the value exceeds the maximum session count (CountStatistic).
    
    See Also:
    Constant Field Values
  - CacheDiscardCount
```
static final int CacheDiscardCount
```
    The number of session objects that are forced out of the cache (CountStatistic).
    
    See Also:
    Constant Field Values
  - ExternalReadTime
```
static final int ExternalReadTime
```
    The time (in milliseconds) taken in reading the session data from persistent store (TimeStatistic). For Multirow, the metrics are for the attribute; for SingleRow the metrics are for the whole session. Applicable only for persistent sessions. When using a JMS persistent store, if you choose not to serialize the data, the counter is not available.
    
    See Also:
    Constant Field Values
  - ExternalReadSize
```
static final int ExternalReadSize
```
    The size of the session data read from persistent store (TimeStatistic). Applicable only for (serialized) persistent sessions and similar to externalReadTime.
    
    See Also:
    Constant Field Values
  - ExternalWriteTime
```
static final int ExternalWriteTime
```
    The time (in milliseconds) taken in writing the session data from persistent store (AverageStatistic). Applicable only for (serialized) persistent sessions and similar to externalReadTime.
    
    See Also:
    Constant Field Values
  - ExternalWriteSize
```
static final int ExternalWriteSize
```
    The size of the session data written to persistent store (AverageStatistic). Applicable only for (serialized) persistent sessions and similar to externalReadTime.
    
    See Also:
    Constant Field Values
  - AffinityBreakCount
```
static final int AffinityBreakCount
```
    The number of HTTP session affinities that are broken, not counting WebSphere Application Server intentional breaks of session affinity (CountStatistic).
    
    See Also:
    Constant Field Values
  - TimeSinceLastActivated
```
static final int TimeSinceLastActivated
```
    The time difference in milliseconds of the previous and current access time stamps (TimeStatistic). Does not include sessions timed out.
    
    See Also:
    Constant Field Values
  - TimeoutInvalidationCount
```
static final int TimeoutInvalidationCount
```
    The number of sessions that are invalidated with timeout (CountStatistic).
    
    See Also:
    Constant Field Values
  - ActivateNonExistSessionCount
```
static final int ActivateNonExistSessionCount
```
    The number of requests for a session that no longer exists, presumably because the session timed out (CountStatistic).
    
    See Also:
    Constant Field Values
  - SessionObjectSize
```
static final int SessionObjectSize
```
    The average size of the session objects at session level, including only serializable attributes in the cache (AverageStatistic).
    
    See Also:
    Constant Field Values

NAME

CreateCount

InvalidateCount

LifeTime

ActiveCount

LiveCount

NoRoomForNewSessionCount

CacheDiscardCount

ExternalReadTime

ExternalReadSize

ExternalWriteTime

ExternalWriteSize

AffinityBreakCount

TimeSinceLastActivated

TimeoutInvalidationCount

ActivateNonExistSessionCount

SessionObjectSize