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Difference between revisions of "Configuring Database Sessions (ELUG)"
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| − | + | [[Image:Elug draft icon.png]] '''For the latest EclipseLink documentation, please see http://www.eclipse.org/eclipselink/documentation/ ''' | |
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| − | + | <div style="float:right;border:1px solid #000000;padding:5px">__TOC__ | |
| − | + | [[Special:Whatlinkshere/Configuring Database Sessions (ELUG)|Related Topics]]</div> | |
This table lists the configurable options for database sessions. | This table lists the configurable options for database sessions. | ||
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<span id="Table 91-1"></span> | <span id="Table 91-1"></span> | ||
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{| class="RuleFormalMax" dir="ltr" title="Configurable Options for Database Session" summary="This table lists the configurable options common to Database Sessions and categorizes them as Basic and Advanced and indicates if the option can be configured with the Workbench, Java, or both." width="100%" border="1" frame="border" rules="all" cellpadding="3" frame="border" rules="all" | {| class="RuleFormalMax" dir="ltr" title="Configurable Options for Database Session" summary="This table lists the configurable options common to Database Sessions and categorizes them as Basic and Advanced and indicates if the option can be configured with the Workbench, Java, or both." width="100%" border="1" frame="border" rules="all" cellpadding="3" frame="border" rules="all" | ||
|- align="left" valign="top" | |- align="left" valign="top" | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r2c1-t2" headers="r1c1-t2" align="left" | | | id="r2c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[#Configuring External Connection Pools|Configuring External Connection Pools]] | |
| headers="r2c1-t2 r1c2-t2" align="left" | | | headers="r2c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r3c1-t2" headers="r1c1-t2" align="left" | | | id="r3c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring a Primary Mapping Project|Configuring a Primary Mapping Project]] | |
| headers="r3c1-t2 r1c2-t2" align="left" | | | headers="r3c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r4c1-t2" headers="r1c1-t2" align="left" | | | id="r4c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring a Session Login|Configuring a Session Login]] | |
| headers="r4c1-t2 r1c2-t2" align="left" | | | headers="r4c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r5c1-t2" headers="r1c1-t2" align="left" | | | id="r5c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring Logging|Configuring Logging]] | |
| headers="r5c1-t2 r1c2-t2" align="left" | | | headers="r5c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r6c1-t2" headers="r1c1-t2" align="left" | | | id="r6c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring Multiple Mapping Projects|Configuring Multiple Mapping Projects]] | |
| headers="r6c1-t2 r1c2-t2" align="left" | | | headers="r6c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r7c1-t2" headers="r1c1-t2" align="left" | | | id="r7c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring a Performance Profiler|Configuring a Performance Profiler]] | |
| headers="r7c1-t2 r1c2-t2" align="left" | | | headers="r7c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r8c1-t2" headers="r1c1-t2" align="left" | | | id="r8c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring an Exception Handler|Configuring an Exception Handler]] | |
| headers="r8c1-t2 r1c2-t2" align="left" | | | headers="r8c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r9c1-t2" headers="r1c1-t2" align="left" | | | id="r9c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring a Session Customizer Class|Configuring a Session Customizer Class]] | |
| headers="r9c1-t2 r1c2-t2" align="left" | | | headers="r9c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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|- align="left" valign="top" | |- align="left" valign="top" | ||
| id="r10c1-t2" headers="r1c1-t2" align="left" | | | id="r10c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring the Server Platform|Configuring the Server Platform]] | |
| headers="r10c1-t2 r1c2-t2" align="left" | | | headers="r10c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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| id="r11c1-t2" headers="r1c1-t2" align="left" | | | id="r11c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring Session Event Listeners|Configuring Session Event Listeners]] | |
| headers="r11c1-t2 r1c2-t2" align="left" | | | headers="r11c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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| id="r12c1-t2" headers="r1c1-t2" align="left" | | | id="r12c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Coordinated%20Cache%20(ELUG)|Configuring a Coordinated Cache]] | |
| headers="r12c1-t2 r1c2-t2" align="left" | | | headers="r12c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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| id="r13c1-t2" headers="r1c1-t2" align="left" | | | id="r13c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring the Integrity Checker|Configuring the Integrity Checker]] | |
| headers="r13c1-t2 r1c2-t2" align="left" | | | headers="r13c1-t2 r1c2-t2" align="left" | | ||
[[Image:support.gif|Supported]]<br> | [[Image:support.gif|Supported]]<br> | ||
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| id="r14c1-t2" headers="r1c1-t2" align="left" | | | id="r14c1-t2" headers="r1c1-t2" align="left" | | ||
| − | + | [[Configuring%20a%20Session%20(ELUG)#Configuring Named Queries at the Session Level|Configuring Named Queries at the Session Level]] | |
| headers="r14c1-t2 r1c2-t2" align="left" | | | headers="r14c1-t2 r1c2-t2" align="left" | | ||
[[Image:unsupport.gif|Unsupported]]<br> | [[Image:unsupport.gif|Unsupported]]<br> | ||
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|} | |} | ||
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==Configuring External Connection Pools== | ==Configuring External Connection Pools== | ||
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We recommend that you use a server and client session in a three-tier environment. Alternatively, you can use a database session with an external connection pool (see [[Configuring%20a%20Data%20Source%20Login%20(ELUG)#Configuring External Connection Pooling|Configuring External Connection Pooling]]): in this case, you should allocate a new database session per user/thread or request. | We recommend that you use a server and client session in a three-tier environment. Alternatively, you can use a database session with an external connection pool (see [[Configuring%20a%20Data%20Source%20Login%20(ELUG)#Configuring External Connection Pooling|Configuring External Connection Pooling]]): in this case, you should allocate a new database session per user/thread or request. | ||
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{| class="NoteWarn oac_no_warn" width="80%" border="1" frame="hsides" rules="groups" cellpadding="3" frame="hsides" rules="groups" | {| class="NoteWarn oac_no_warn" width="80%" border="1" frame="hsides" rules="groups" cellpadding="3" frame="hsides" rules="groups" | ||
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The usage of an external connection pool reduces the number of the database session login and logout attempts to acquire the database connection. | The usage of an external connection pool reduces the number of the database session login and logout attempts to acquire the database connection. | ||
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[[Category: EclipseLink User's Guide]] | [[Category: EclipseLink User's Guide]] | ||
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[[Category: Task]] | [[Category: Task]] | ||
Latest revision as of 15:09, 16 July 2012
For the latest EclipseLink documentation, please see http://www.eclipse.org/eclipselink/documentation/
This table lists the configurable options for database sessions.
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Configuring External Connection Pools
Unlike a server session, a database session does not provide internal connection pools. A database session only has a single database connection that it uses for its life cycle.
We recommend that you use a server and client session in a three-tier environment. Alternatively, you can use a database session with an external connection pool (see Configuring External Connection Pooling): in this case, you should allocate a new database session per user/thread or request.
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WARNING: Do not allow the concurrent use of a database session by multiple users/threads. |
The usage of an external connection pool reduces the number of the database session login and logout attempts to acquire the database connection.