import oracle jdbc driver oracledriver

Create a table which contains two columns namely NAME and PHOTO. "datasource-name".reactive.event-loop-size, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_EVENT_LOOP_SIZE, quarkus.datasource. #1) Import Packages. The ResultSet is not sensitive to the changes made by the others to the database. However, to perform the insert and update operations in the database, executeUpdate() method is used which returns the boolean value to indicate the successful completion of the operation. DevServices is generally enabled by default, unless there is an existing configuration present. Driver sampleExampleDriver = new com.mysql.jdbc.Driver(); Please use ide.geeksforgeeks.org, DriverManager.getConnection(). "datasource-name".reactive.additional-properties, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_ADDITIONAL_PROPERTIES, Environment variable: QUARKUS_DATASOURCE_REACTIVE_DB2_SSL, quarkus.datasource. In this article, we will show you how to create a Spring Boot + Spring Data JPA + Oracle + HikariCP connection pool example. If you plan to make a native executable, we recommend you use the existing JDBC Quarkus extensions (or contribute one for your driver). This sampler lets you send a JDBC Request (an SQL query) to a database. Environment variable: QUARKUS_DATASOURCE_JDBC_IDLE_REMOVAL_INTERVAL, Environment variable: QUARKUS_DATASOURCE_JDBC_MAX_LIFETIME, quarkus.datasource.jdbc.transaction-isolation-level, Environment variable: QUARKUS_DATASOURCE_JDBC_TRANSACTION_ISOLATION_LEVEL, undefined, none, read-uncommitted, read-committed, repeatable-read, serializable, quarkus.datasource.jdbc.extended-leak-report. If you increase the value above 0.5, AWS Glue increases the request rate; decreasing the value below 0.5 decreases the read request rate. It executes a static SQL query at runtime. Can "it's down to him to fix the machine" and "it's up to him to fix the machine"? "datasource-name".reactive.trust-all, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_TRUST_ALL, quarkus.datasource. Connection sampleConnection = DriverManager.getConnection(educba_URL); One more method includes the specification of properties username and password same as above. If there is only one possible extension we assume this is the correct one, and if a driver has been added with test scope then jdbc:postgresql:[//][host][:port][/database][?key=value]. "datasource-name".reactive.key-certificate-pem.keys, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_KEY_CERTIFICATE_PEM_KEYS, quarkus.datasource. PROCEDURE MY_PROC (n NUMBER) IS BEGIN IF n=0 THEN proc(false); ELSE proc(true); END IF; END; PROCEDURE PROC (b BOOLEAN) IS BEGIN END; RACImplicit Connection CacheRACRACUP, OCITAFTAFTAF1, getCursorNamesetCursorName JDBCROWIDJDBC 4.0oracle.sql.ROWIDJSE 6 (ojdbc6.jar) java.sql.Rowid, ROWIDResultSet getStringJDBCsetStringROWIDpreparedStatement, ResultSetMetaDataROWIDoracle.jdbc.driver.OracleTypes.ROWID-8, Oracle JDBCREFCURSORREFCURSORJDBC ResultSetCallableStatementgetCursorPL/SQLREFCURSORResultSetJDBCCallableStatementoracle.jdbc.driver.OracleCallableStatementgetCursor, 9.2OCIThinANO, ANO8.0.X OCI8.0.x8.0.48.0.58.0.6, 8.1.58.1.6 SDK#8994248.1.58.1.6 SDK, 8.1.68.1.6#899424, SQLoracle.SQL. Whether this particular data source should be excluded from the health check if the general health check for data sources is enabled. See detailed answer here: Difference between Oracle jdbc It can be used for transaction management. You can also provide duration values starting with a number. Connection conn = DriverManager.getConnection(URL_TO_CONNECT, USERNAME, ASSOCIATED_PASSWORD); Alternatively, you can also specify just a single url for connection establishment but in this case, the url should contain the information of username and the password in it as shown in the below sample. jdbc:mariadb:[replication:|failover:|sequential:|aurora:]//[,]/[database][?=[&=]] Quarkus is open. Just add the ojdbc14.jar to your classpath. That is because you used the wrong value for spring.datasource.driver-class-name. System.out.println("The established connection has been closed! Environment variable: QUARKUS_DATASOURCE_JDBC_FLUSH_ON_CLOSE, quarkus.datasource.jdbc.detect-statement-leaks. Oracle JDBC. 1. Is it set up oracle database during the startup? String ASSOCIATED_PASSWORD = payal@123 There are four type of locks given in JDBC that are described below. "datasource-name".jdbc.pooling-enabled, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__JDBC_POOLING_ENABLED, quarkus.datasource. java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver. Because the Thin JDBC driver is designed to be used with downloadable applets used over the Internet, Oracle designed a 100 percent Java implementation of Oracle Database network encryption and strong authentication, encryption, and integrity Mail us on [emailprotected], to get more information about given services. "datasource-name".jdbc.detect-statement-leaks, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__JDBC_DETECT_STATEMENT_LEAKS, quarkus.datasource. Register JDBC Driver This step causes the JVM to load the desired driver implementation into memory so it can fulfill your JDBC requests. The DatabaseMetaData interface returns the information of the database such as username, driver name, driver version, number of tables, number of views, etc. configure a datasource, or multiple datasources, how to obtain a reference to those datasources in code, which pool tuning configuration properties are available. Enable datasource metrics collection. import java.sql. Environment variable: QUARKUS_DATASOURCE_METRICS_ENABLED, Environment variable: QUARKUS_DATASOURCE_USERNAME, Environment variable: QUARKUS_DATASOURCE_PASSWORD, Environment variable: QUARKUS_DATASOURCE_CREDENTIALS_PROVIDER, quarkus.datasource.credentials-provider-name. How to trace which file path the program load the driver from? To learn more, see our tips on writing great answers. Set to true to share the pool among datasources. All of the answers here use the Class.forName("my.vandor.Driver"); line to load the driver.. As an (better) alternative you can use the DriverManager helper class which provides you with a handful of methods to handle your JDBC driver/s.. You might want to. jdbc:db2://localhost:50000/MYDB:user=dbadm;password=dbadm; See the official documentation for more detail on URL syntax and additional supported options. The JDBC-style of registration: Use the JDBC driver to create a registration on the server. By using setNull() method of PreparedStatement interface, we can set the null value to an index. "datasource-name".reactive.hostname-verification-algorithm, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_HOSTNAME_VERIFICATION_ALGORITHM, quarkus.datasource. The registration of the driver can be done by using either of the two approaches mentioned below. "datasource-name".reactive.trust-certificate-pfx.path, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_TRUST_CERTIFICATE_PFX_PATH, quarkus.datasource. "datasource-name".devservices.username, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__DEVSERVICES_USERNAME, quarkus.datasource. 4) Build Path. This & is an ampersand. Irrespective of the JDBC Driver, add the following import statement in the Java program. For reactive, we use the Vert.x reactive drivers. Environment variable: QUARKUS_DATASOURCE_JDBC_TRANSACTIONS. The query used in PreparedStatement is appeared to be similar every time. The cursor can move in both the direction. #1) Import Packages. WARNING: Some extensions acquire connections without holding a transaction for things like schema updates and schema validation. public void cursorMoved(RowSetEvent event); public void rowChanged(RowSetEvent event); public void rowSetChanged(RowSetEvent event). Setting this setting to STRICT may lead to failures in those cases. The result obtained by executing the select query is stored in the ResultSet cursor. import findspark findspark.init() It should be the first line of your code when you run from the jupyter notebook. Then you can obtain the Connection from this DataSource. Note: You may need to set up the following data structures for certain examples to work: CONNECT system/manager; DROP USER aqadm CASCADE; GRANT CONNECT, RESOURCE TO aqadm; CREATE USER aqadm IDENTIFIED BY aqadm; GRANT EXECUTE ON DBMS_AQADM TO aqadm; GRANT Aq_administrator_role TO aqadm; DROP USER aq CASCADE; CREATE USER aq The example to retrieve the file from the Oracle database is given below. this will work as usual in JVM mode but such an application will not compile into a native executable, as the Quarkus extensions only cover for making the JDBC client code compatible with the native compilation step: embedding the whole database engine into a native executable is currently not implemented. URL Consider the following example to close the connection. Asking for help, clarification, or responding to other answers. "datasource-name".jdbc.max-size, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__JDBC_MAX_SIZE, quarkus.datasource. formulation of URL for database & example. The setCharacterStream() method of PreparedStatement interface is used to set character information into the parameterIndex. The following article provides an outline for JDBC getConnection. 0.5 represents the default read rate, meaning that AWS Glue will attempt to consume half of the read capacity of the table. Environment variable: QUARKUS_DATASOURCE_REACTIVE_RECONNECT_ATTEMPTS, quarkus.datasource.reactive.reconnect-interval. The interval at which we validate idle connections in the background. Sqoop is a tool designed to transfer data between Hadoop and relational databases or mainframes. In this tutorial, we will learn about Because the Thin JDBC driver is designed to be used with downloadable applets used over the Internet, Oracle designed a 100 percent Java implementation of Oracle Database network encryption and strong authentication, encryption, and integrity String URL_TO_CONNECT = jdbc:oracle:thin:@payal:1603:EDUCBA; "datasource-name".password, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__PASSWORD, quarkus.datasource. catch(ClassNotFoundException sampleException) { Thanks. The closing of the connection that is established from the java program to the database for clearing the environment and the associated memory can be done by using the close() method that should be given a call by using the object of connection. However, we can make this object to move the forward and backward direction by passing either TYPE_SCROLL_INSENSITIVE or TYPE_SCROLL_SENSITIVE in createStatement(int, int) method. The registration of the driver can be done by using either of the two approaches mentioned below. Python Interview Questions for Five Years Experienced, Java String & Exception Interview Questions. You can create a subprogram either inside a PL/SQL block (which can be another subprogram), inside a package, or at schema level. sampleURL="jdbc:mysql://localhost:3306/educba"; The executeQuery() method returns a ResultSet object which contains the data retrieved by the select statement. Otherwise, PT is implicitly prepended to the value to obtain a standard java.time.Duration format. Environment variable: QUARKUS_DATASOURCE_DEVSERVICES_CONTAINER_PROPERTIES, quarkus.datasource.devservices.properties. "datasource-name".jdbc.acquisition-timeout, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__JDBC_ACQUISITION_TIMEOUT, quarkus.datasource. The connection between the data source and the RowSet object is maintained throughout its life cycle. "No suitable driver" usually means that the JDBC URL you've supplied to connect has incorrect syntax or when the driver isn't loaded at all.. Registered driver with driverClassName=oracle.jdbc.driver.OracleDriver was not found, trying direct instantiation. Exception handling using try/catch block can be used in stored procedures. Below given configuration shows sample properties for H2, MySQL, Oracle and SQL Server databases. in your boot.log file, you should see java.class.path as follow 10:41:16,818 DEBUG [ServerInfo] java.class.path: :./../server/default/mycompany_configfiles:/var/lib/jboss/myenvironment/bin/run.jar:/opt/java/jdk1.6.0_23_amd64//lib/tools.jar:/var/lib/jboss/myenvironment/lib/jboss-logmanager.jar - and most of this all the environment variables are display at startup just after launching it. It is a Web & Enterprise application development platform which basically follows client & server architecture. hope this could help. Java Database ConnectivityJDBCAPIJavaSQL Does driver version need to match with database version? Register JDBC Driver This step causes the JVM to load the desired driver implementation into memory so it can fulfill your JDBC requests. Configuration property fixed at build time - All other configuration properties are overridable at runtime. First, if you develop an application with Java EE 6 within a server (JBoss), If you have multiple datasources, all datasources will be checked and the status will be DOWN as soon as there is one datasource validation failure. The cursor is iterated using the next() method and the records are displayed on the screen. JDBC driver is not loaded. Copyright 2011-2021 www.javatpoint.com. You need to ensure that the JDBC driver is placed in server's own /lib folder.. Or, when you're actually not using a server-managed connection pool data source, but are manually fiddling around with jdbc:oracle:driver_type:@database_specifier, jdbc:oracle:thin:@localhost:1521/ORCL_SVC. JavaTpoint offers too many high quality services. Its not enabled by default. URL Currently, the client supports the following parameter keys (case-insensitive): oracle:thin:@[[protocol:]//]host[:port][/service_name][:server_mode][/instance_name][?connection properties], oracle:thin:@mydbhost1:5521/mydbservice?connect_timeout=10sec, oracle:thin:@[?connection properties], oracle:thin:@prod_db?TNS_ADMIN=/work/tns/, postgresql://[user[:[password]]@]host[:port][/database][?=[&=]], postgresql://dbuser:secretpassword@database.server.com:5432/mydb. The cursor is iterated using the next() method and the records are displayed on the screen. Advanced Java is everything that goes beyond Core Java most importantly the APIs defined in Java Enterprise Edition, includes Servlet programming, Web Services, the Persistence API, etc. Given below is the syntax in detail about each of the steps seen above: The syntax of importing is basically writing the import statement followed by the name of the package that you wish to import. Here, we are assuming that the stored procedure looks like this. applicationContext.xml. The following example uses Class.forName() to load the Oracle driver Class.forName(oracle.jdbc.driver.OracleDriver); DriverManager.registerDriver(): DriverManager is a Java inbuilt class with a static member register. a. Environment variable: QUARKUS_DATASOURCE_JDBC, Environment variable: QUARKUS_DATASOURCE_JDBC_DRIVER. JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. I had left out a colon before the at sign (@). The RowSet supports development models that are component-based such as JavaBeans, with the standard set of properties and the mechanism of event notification. JDBC driver is not loaded. Environment variable: QUARKUS_DATASOURCE_DEVSERVICES_PORT. In JDBC, Connection interface provides methods like setAutoCommit(), commit(), and rollback() which can be used to manage transaction. How can we create psychedelic experiences for healthy people without drugs? Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_PEM_CERTS, quarkus.datasource.reactive.trust-certificate-jks, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_JKS, quarkus.datasource.reactive.trust-certificate-jks.path, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_JKS_PATH, quarkus.datasource.reactive.trust-certificate-jks.password, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_JKS_PASSWORD, quarkus.datasource.reactive.trust-certificate-pfx, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_PFX, quarkus.datasource.reactive.trust-certificate-pfx.path, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_PFX_PATH, quarkus.datasource.reactive.trust-certificate-pfx.password, Environment variable: QUARKUS_DATASOURCE_REACTIVE_TRUST_CERTIFICATE_PFX_PASSWORD, quarkus.datasource.reactive.key-certificate-pem. Here we call the constructor of the driver class at compile time. you dont need to add the Agroal extension dependency explicitly. Query executed when first using a connection. System.out.println(sampleException.toString()); In JDBC, Statements are used to send SQL commands to the database and receive data from the database. Output . Other unspecified properties to be passed to the JDBC driver when creating new connections. Import will make sure that JDBC API classes are available for the program. All of these options are available as listed above. It was in the JDBC 2.0, the support for the RowSet was introduced using the optional packages. By default, this metric collection mechanism gets turned on for all data sources if a metrics extension If you want a better understanding of how all this works, this guide has a lot more information in the subsequent paragraphs. } Registered driver with driverClassName=oracle.jdbc.driver.OracleDriver was not found, trying direct instantiation. When using Dev Services the default datasource will always be created, but to specify a named datasource you need to have driver class is loaded only once and connection object gets memory only once. All of the answers here use the Class.forName("my.vandor.Driver"); line to load the driver.. As an (better) alternative you can use the DriverManager helper class which provides you with a handful of methods to handle your JDBC driver/s.. You might want to. }. MBeans, their child types, attributes, and operations, see MBean Reference for Oracle WebLogic Server. It is a Web & Enterprise application development platform which basically follows client & server architecture. "); JDBC is a Java API that is used to connect and execute the query to the database. i have changed my old path: jdbc:odbc:thin:@localhost:1521:orcl, to new : jdbc:oracle:thin:@//localhost:1521/orcl. You can use Sqoop to import data from a relational database management system (RDBMS) such as MySQL or Oracle or a mainframe into the Hadoop Distributed File System (HDFS), transform the data in Hadoop MapReduce, and then export the data back into an RDBMS. This helps the java compiler to identify the classes that should be called and referred. ][datasource property]. The addBatch() command is used to queue the SQL statements and executeBatch() command is used to execute the queued SQL statements all at once. I would suggest to place .jar at physical location to JBoss "$JBOSS_HOME/server/default/lib/" directory of your project. Creating connection: The getConnection() method of DriverManager class is used to establish the connection with the database. Using Class.forName() This the most common method of registering the driver which loads all the files automatically. This is also preferable due to its portability and configuration of the driver registration. Find centralized, trusted content and collaborate around the technologies you use most. The following example demonstrates the syntax of the same. jdbc:oracle:thin:@localhost:1521:xe. "datasource-name".reactive.mssql.ssl, Environment variable: QUARKUS_DATASOURCE__DATASOURCE_NAME__REACTIVE_MSSQL_SSL, quarkus.datasource.reactive.postgresql.pipelining-limit. DriverManager.getConnection(). In this article, we will show you how to create a Spring Boot + Spring Data JPA + Oracle + HikariCP connection pool example. If you are using JDK11 then, ojdbc8.jar is still a better choice as it includes all the 4.3 features but as Oracle extensions. When the method getConnection is called, the DriverManager will attempt to locate a suitable driver from amongst those loaded at initialization and those loaded explicitly using the same classloader as the current applet or MBeans, their child types, attributes, and operations, see MBean Reference for Oracle WebLogic Server. All the configuration properties specific to JDBC have this prefix. I had "jdbc:oracle:thin@//localhost" instead of "jdbc:oracle:thin:@//localhost" *, Oracle JDBC8.1.5, WaitOptionAutoRollback. By using our site, you Making statements based on opinion; back them up with references or personal experience. The credentials provider bean name. The desired size (in bytes) for TDS packets. So, we need to provide the reference of DriverManagerDataSource object in the JdbcTemplate class The class files of the driver get loaded inside the memory which can be further used further by interfaces of JDBC. Environment variable: QUARKUS_DATASOURCE_REACTIVE_KEY_CERTIFICATE_PEM, quarkus.datasource.reactive.key-certificate-pem.keys. This is the name registered in SPI mode (see the content of this file : META-INF/services/java.sql.Driver). The infamous java.sql.SQLException: No suitable driver found. you wont need to configure the driver. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Currently, the client supports the following parameter keys: sqlserver://[user[:[password]]@]host[:port][/database][?=[&=]], sqlserver://dbuser:secretpassword@database.server.com:1433/mydb, mysql://[user[:[password]]@]host[:port][/database][?=[&=]], mysql://dbuser:secretpassword@database.server.com:3211/mydb. }. It is the @Named value of the credentials provider bean. The kind of database we will connect to (e.g. . When using multiple datasources, each DataSource also has the io.quarkus.agroal.DataSource qualifier with the name of the datasource as the value. The infamous java.sql.SQLException: No suitable driver found. Demonstrating execution of multiple SQL commands on a database simultaneously using the addBatch() and executeBatch() commands of JDBC. It keeps track of the drivers that are available and handles establishing a connection between a database and the appropriate driver. applicationContext.xml. Mail us on [emailprotected], to get more information about given services. but the following section gives an overview of each database URL and a link to the official documentation. property so that Quarkus knows they exist. String USERNAME = payal; 2022 Moderator Election Q&A Question Collection, No suitable driver found for jdbc:oracle:thin:@localhost:1522:xe, How to define database 'driver' using Groovy sql module, No suitable driver found for "jdbc:oracle:thin:@localhost:1521:xe" in hibernate without IDE, Unable to deploy war on one particular server, java.sql.SQLException: No suitable driver found for, EJB invocations from a remote client using JNDI: Invalid User, JBoss AS 7 migration - deployment failure issue, JBOSS Wildfly: ARJUNA016082: Synchronizations are not allowed! Once you have defined the database kind and the credentials, you are ready to configure either a JDBC datasource, a reactive one, or both. try { This JDBC Exception Handling tutorial explains ways to handle SQL Exceptions with the help of programming examples: In the JDBC Transaction Management tutorial of the JDBC tutorial series, we learned JDBC transaction types, data types, transaction management methods, and how to use them in Java programs.. By using a JDBC driver extension and setting the kind in the configuration, Quarkus resolves the JDBC driver automatically, so you dont need to configure it yourself. If you want to use a database kind that is not part of the built-in ones, use other and define the JDBC driver explicitly. BLOB is supported by many databases such as MySQL, Oracle, and DB2 to store the binary data (images, video, audio, and mixed media). Enable JDBC tracing. Environment variable: QUARKUS_DATASOURCE_REACTIVE_EVENT_LOOP_SIZE. ResultSet rset = stmt.executeQuery ("select ROWID from EMP"); rset.close (); // or stmt.close (); rset.getString (1); JDBCConnectionStatementResultSetJVMSun, JDBCJDBCJDBC 4.0, ResultSetStatemnentConnectionResultSetStatementConnection, ConnectionStatementStatementResultSetConnectionConnectionStatementResultSetStatementResultSet, PreparedStatement ps = null; ResultSet rs = null; try { ps = conn.prepareStatement(sql); try { rs = ps.executeQuery(); while (rs.next()) { // process row } } finally { if (rs != null) rs.close(); } } finally { if (ps != null) ps.close(); }, Oracle JDBC9.2DATE SQLjava.SQL.Timestamp.Oracle DATE SQLjava.SQL.Timestamp.java.sql.Datejava.sql.DateRDBMSTIMESTAMP SQLDATETimestamp, 9.2 RDBMSTIMESTAMPDATETIMESTAMPTIMESTAMPDATE9.2DATEDateTIMESTAMPTimestampDATE, 9.210.2, Oracle JDBC 11.1SQL DATEjava.SQL.TimestampV8CompatibleV8Compatibletrue, V8CompatibleDATEDate8i8iTIMESTAMPV8CompatibleSQL DATETimestampTimestampsSQL DATE8i11.1 JDBCV8CompatibleV8Compatible, 11.1SQL DATETimestamp9i11.1V8CompatiblegetObjectDATEDateTimestampTimestampDateDATEDatetoString, 9i10gConnectionmapDateToTimestampfalse9i10gDATEDate, 9.2LONGsetString()OCI64,000Thin4,00010.1.032,000OCI64,00032,000LONGCLOB, 32,000setString()LONGCLOB, TimestampTimestampUTCTimestamp2007118(UTC)2007118(PST), PST20071189i10gUTC2007118Timestamp"2007118"""11.1, JDBC 4.0ADTConnectionAPI, JDBC 4.0JSE 6ojdbc6.jarJSE 5JSE 6ojdbc5.jarojdbc6.jarOracleConnection, SQLanonymous"array of foofoo"Oracle SQLJDBC 4.0Oracle JDBCcreateArrayOracle SQLOracleJDBC 4.0createArrayOf, CLOB""CLOB**CLOBCLOBDBMS_LOB.TRIM, OutputStreamputChars, JDBCCLOB**USC2Java "char"OracleOCI CLOB CharSetId, 10,000LONG RAW, LONG''LobLocatorgetBlob()LONGLOBBLOBLONG, Oracle LOBLOBLOBLOBLOB, REF, REFOracle JDBC, REF"SomeREF"1REFJDBC Connection"toREF"REF, public class SomeREF implements java.io.Serializable { String typeName; byte[] bytes; public SomeREF (oracle.sql.REF ref) throws SQLException { this.typeName = ref.getBaseTypeName (); this.bytes = ref.getBytes (); } public oracle.sql.REF toREF (Connection conn) throws SQLException { return new oracle.sql.REF (new oracle.sql.StructDescriptor (typeName,conn),conn, bytes); } }, Oracle8REFREFJDBCJava oracle.sql.REFJDBCREFREFSQLREF, PL/SQL.

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