Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Administration Reference

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## ejb-container

Configures the EJB container. Stateless session beans are maintained in pools. Stateful session beans have session affinity and are cached. Entity beans associated with a database primary key are also cached. Entity beans not yet associated with a primary key are maintained in pools. Pooled entity beans are used to run `ejbCreate()` and finder methods.

### Superelements

config

### Subelements

The following table describes subelements for the `ejb-container` element.

Table 1–35 `ejb-container` Subelements

Element | Required | Description
--- | --- | ---
ejb-timer-service | zero or one | Configures the EJB timer service.
property | zero or more | Specifies a property or a variable.

### Attributes

The following table describes attributes for the `ejb-container` element.

Table 1–36 `ejb-container` Attributes

Attribute | Default | Description
--- | --- | ---
`steady-pool-size` | `32` | (optional) Specifies the initial and minimum number of beans maintained in the pool. Must be `0` or greater and less than `max-pool-size` . Bean instances are removed from the pool and returned after use. The pool is replenished or cleaned up periodically to maintain this size. Applies to stateless session beans and entity beans.
`pool-resize-quantity` | `16` | (optional) Specifies the number of beans to be removed when the `pool-idle-timeout-in-seconds` timer expires. A cleaner thread removes any unused instances. Must be `0` or greater and less than `max-pool-size` . The pool is not resized below the `steady-pool-size`. Applies to stateless session beans and entity beans.
`max-pool-size` | `64` | (optional) Specifies the maximum number of beans that can be created to satisfy client requests. A value of `0` indicates an unbounded pool. Applies to stateless session beans and entity beans.
`cache-resize-quantity` | `32` | (optional) Specifies the number of beans to be: created if a request arrives when the pool has no available beans (subject to the `max-cache-size` limit) passivated when the `cache-idle-timeout-in-seconds` timer expires and a cleaner thread removes any unused instances, or when the cache size exceeds `max-cache-size`. Must be greater than `1` and less than `max-cache-size`. Applies to stateful session beans and entity beans.
`max-cache-size` | `512` | (optional) Specifies the maximum number of beans in the cache. A value of `0` indicates an unbounded cache. Applies to stateful session beans and entity beans.
`pool-idle-timeout-in-seconds` | `600` | (optional) Specifies the maximum time that a bean can remain idle in the pool. After this amount of time, the pool can remove this bean. A value of `0` specifies that idle beans can remain in the pool indefinitely. Applies to stateless session beans and entity beans.
`cache-idle-timeout-in-seconds` | `600` | (optional) Specifies the maximum time that a bean can remain idle in the cache. After this amount of time, the container can passivate this bean. A value of `0` specifies that beans never become candidates for passivation. Applies to stateful session beans and entity beans.
`removal-timeout-in-seconds` | `5400` | (optional) Specifies the amount of time that a bean can remain passivated before it is removed from the session store. A value of `0` specifies that the container does not remove inactive beans automatically. If `removal-timeout-in-seconds` is less than or equal to `cache-idle-timeout-in-seconds`, beans are removed immediately without being passivated. The `session-store` attribute of the server element determines the location of the session store. Applies to stateful session beans.
`victim-selection-policy` | `nru` | (optional) Specifies how stateful session beans are selected for passivation. Allowed values are `fifo`, `lru`, and `nru` : `fifo` - Selects the oldest instance. `lru` - Selects the least recently accessed instance. `nru` - Selects a not recently used instance.
`commit-option` | `B` | (optional) Determines which commit option is used for entity beans. Legal values are `B` or `C`.
`session-store` | domain-dir`/session-store` | (optional) Specifies the directory where passivated stateful session beans and persisted HTTP sessions are stored in the file system.

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