| |
JDBC Data Source: Configuration: General
Configuration Options Related Tasks Related Topics
Applications get a database connection from a data source by looking up the data source on the Java Naming and Directory Interface (JNDI) tree and then requesting a connection. The data source provides the connection to the application from its pool of database connections.
This page enables you to define general configuration options for this JDBC data source.
Configuration Options
Name Description Name A unique name that identifies this data source in the WebLogic domain.
MBean Attribute (Does not apply to application modules) :
JDBCDataSourceBean.NameChanges take effect after you redeploy the module or restart the server.
Datasource Type The data source type. Valid types are:
GENERIC - generic data source
MDS - multi data source
AGL - Active GridLink data source
UCP - Universal Connection Pool data source
PROXY - proxy for multiple tenant data sources
MBean Attribute (Does not apply to application modules) :
JDBCDataSourceBean.DatasourceTypeChanges take effect after you redeploy the module or restart the server.
Scope The scope in which the data source is available in
JNDI Name The JNDI path to where this data source is bound. By default, the JNDI name is the name of the data source.
To specify multiple JNDI names for the data source, enter each JNDI name on a separate line.
Applications that look up the JNDI path will get a
javax.sql.DataSourceinstance that corresponds to this data source.MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.JNDINamesChanges take effect after you redeploy the module or restart the server.
Row Prefetch Enabled Enables multiple rows to be "prefetched" (that is, sent from the server to the client) in one server access.
This parameter applies only to the deprecated JDBC over RMI.
When an external client accesses a database using JDBC through WebLogic Server, row prefetching improves performance by fetching multiple rows from the server to the client in one server access. WebLogic Server ignores this setting and does not use row prefetching when the client and WebLogic Server are in the same JVM.
MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.RowPrefetchChanges take effect after you redeploy the module or restart the server.
Row Prefetch Size If row prefetching is enabled, specifies the number of result set rows to prefetch for a client.
This parameter applies only to the deprecated JDBC over RMI.
The optimal prefetch size depends on the particulars of the query. In general, increasing this number will increase performance, until a particular value is reached. At that point further increases do not result in any significant performance increase. Very rarely will increased performance result from exceeding 100 rows. The default value should be reasonable for most situations.
MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.RowPrefetchSizeMinimum value:
2Maximum value:
65536Changes take effect after you redeploy the module or restart the server.
Stream Chunk Size Specifies the data chunk size for steaming data types.
This parameter applies only to the deprecated JDBC over RMI.
Streaming data types (for example resulting from a call to
getBinaryStream()) are sent in sized chunks from WebLogic Server to the client as needed.MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.StreamChunkSizeMinimum value:
1Maximum value:
65536Changes take effect after you redeploy the module or restart the server.
Proxy Switching Properties Specifies the switching properties passed to the switching callback method for a Proxy data source.
MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.ProxySwitchingPropertiesProxy Switching Callback The name of the switching callback class for a Proxy data source.
This class implements the
weblogic.jdbc.extensions.DataSourceSwitchingCallbackinterface.MBean Attribute (Does not apply to application modules) :
JDBCDataSourceParamsBean.ProxySwitchingCallbackChanges take effect after you redeploy the module or restart the server.
|