The primary distinction is between permanent errors and transient errors. Returns the savepoint ID for an unnamed savepoint. New exceptions have been added to represent transient and permanent errors and the different categories of these errors. See “Retrieval of Auto-Generated Keys”. Savepoint Notes When using savepoints, you must consider the following: Connection ; import java. Do not, however, try to mix usage of the standard model and Oracle model within a single application for either of these features.
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Throws SQLException if self is a named savepoint. See “Result Set Holdability”. Do not, however, try to mix usage of the standard model and Oracle model within a single application for either of these features. OraclePreparedStatement Resource adapters oracle.
Java Database Connectivity – Wikipedia
There’s something in JDBC 3. Permanent errors are a result of the correct operation of the system and will always occur.
This article describes, in detail, the new features that are available in JDBC 3. OracleSavepoint Savepoints connection extensions java.
See “Result Set Holdability”. Retrieved from ” https: This page was last edited on 1 Octoberat Creates an unnamed savepoint. Support for standard features, such as result set enhancements and update batching.
Microsoft JDBC Driver for SQL Server Support Matrix
For example, a stored procedure named employeeInfo might return the following result sets with: The following performance enhancements are available under JDBC 2. JDBC connections support creating and executing statements.
The minimum number of connections to keep in the pool The maximum jdbv of connections to have in the pool The initial pool size How long connections can remain idle before they’re discarded from the pool How often the connection pool should compliat evaluated to see if it meets the configuration criteria In addition to connection pooling tuning options, JDBC 3.
See “Retrieval of Auto-Generated Keys”. An application would start a transaction, insert some rows, do some updates, and either make the changes permanent commit or discard them all roll back – all the changes would be made permanent or none of them would be.
Support for data types, such as objects, arrays, and large objects LOBs. A RowId object is valid until the identified row is not deleted. OracleConnection Querying parameter capacities new class java. Oracle JDBC provides the following different savepoint interfaces:.
Oracle Database provides the same functionality with the help of sequences and triggers. A transaction with a savepoint is atomic in the sense that it appears to be a single unit outside the context of the transaction, but code operating within the transaction can preserve partial states. Fortunately, the JDBC 3.
In the case of Connections to remote database servers, further resources are tied up on the server, e. The process of creating a PreparedStatement is extremely expensive in terms of performance, especially with some database systems such as DB2. Querying parameter capacities interface change. You need to access the ResultSet object returned from getGeneratedKeys method by position only and no bind variable names should be used as columns in the ResultSet object.
A transaction with a savepoint is atomic in the sense that it appears to be a single unit outside the context of the transaction, but code operating within the transaction can preserve partial states.
Features of the JDBC 2. This processing methodology is somewhat inflexible and involves programming overhead and complexity. Attempting to retrieve a name from an unnamed savepoint or attempting to retrieve an ID from a named savepoint throws an SQLException. When the integer flag is used to indicate that auto-generated keys are to be returned, the ROWID pseudo column is returned as key.