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Blob chunking requires an Oracle 7. By default, this property is set to 0 zero , which means that Blob chunking is turned off. The mechanism for piecewise selects does not have the same use restrictions as that for Blob inserts, so this property is set to by default.
It is not necessary to turn this property off. With this feature support, invoking the ResultSet. Each subsequent invocation of the next method reads a row from the rows in memory until they are exhausted, and only then does the next method go back to the database. You set a property java. Property to control the size of the array fetch. The property is weblogic. The following is an example of setting this property to , which means that invocations to the next method hit the database only once for each rows retrieved by the client:.
You can improve client performance and lower the load on the database server by taking advantage of this JDBC extension. Caching rows in the client, however, requires client resources. Tune your application for the best balance between performance and client resources, depending upon your network configuration and your application.
All of the examples also show native Oracle SQL, commented out, just above the correct usage; the native Oracle syntax works as it did in the past. You can read more about stored procedures for the jdbcKona drivers in Using the jdbcKona Drivers. Note that Oracle does not natively support binding to "? Instead it uses ":1", ":2", and so forth.
BEA Systems, Inc. CallableStatement , that allows you to bind a parameter for a stored procedure to an Oracle cursor where [version] is , or , or Conection or oracle.
In auto-commit mode, the COMMIT operation occurs either when the statement completes or the next execute occurs, whichever comes first.
In the case of statements returning a ResultSet , the statement completes when the last row of the ResultSet has been retrieved or when the ResultSet has been closed. In more complex cases, a single statement can return multiple results as well as output parameter values.
If you disable auto-commit mode with a setAutoCommit false call, then you must manually commit or roll back groups of operations using the commit or rollback method of the connection object. The following example illustrates loading the driver and connecting to the database.
Being in auto-commit mode can be expensive in terms of time and processing effort if, for example, you are repeating the same statement with different bind variables.
By default, new connection objects are in auto-commit mode. However, you can disable auto-commit mode with the setAutoCommit method of the connection object, either java.
Conection or oracle. In auto-commit mode, the COMMIT operation occurs either when the statement completes or the next execute occurs, whichever comes first. In the case of statements returning a ResultSet , the statement completes when the last row of the ResultSet has been retrieved or when the ResultSet has been closed. In more complex cases, a single statement can return multiple results as well as output parameter values.
If you disable auto-commit mode with a setAutoCommit false call, then you must manually commit or roll back groups of operations using the commit or rollback method of the connection object.
The following example illustrates loading the driver and connecting to the database. Because new connections are in auto-commit mode by default, this example shows how to disable auto-commit. In the example, conn represents the Connection object, and stmt represents the Statement object.
Oracle JDBC connection and statement objects allow you to specify the number of rows to prefetch into the client with each trip to the database while a result set is being populated during a query.
You can set a value in a connection object that affects each statement produced through that connection, and you can override that value in any particular statement object. The default value in a connection object is
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