4 types of oracle drivers

 · If you are accessing one type of database, such as Oracle, Sybase, or IBM, the preferred driver type is type If your Java application is accessing multiple types of databases at the same time, type 3 is the preferred driver. Type 2 drivers are useful in situations, where a type 3 or type 4 driver is not available yet for your www.doorway.ruted Reading Time: 4 mins. 4 rows · Installation. Oracle Type 4 JDBC drivers are installed with WebLogic Server in the WL_HOME.  · The OCI driver is a type 2 JDBC driver and uses native code to connect to the database. Thus, it is only an option on platforms that have native Oracle drivers available and it is not a 'pure' Java implementation. Oracle Thin Driver. Oracle's JDBC Thin driver is a type 4 JDBC Driver that uses Java sockets to connect directly to Oracle.

Type-3 driver or Network Protocol driver; Type-4 driver or Thin driver. Type-1 driver. Type-1 driver or JDBC-ODBC bridge driver uses ODBC driver to connect to the database. The JDBC-ODBC bridge driver converts JDBC method calls into the ODBC function calls. Type-1 driver is also called Universal driver because it can be used to connect to any of the databases. When connected to a or later Oracle server, the ODBC Driver maps the Oracle floating point data types BINARY_FLOAT and BINARY_DOUBLE to the ODBC data types SQL_REAL and SQL_DOUBLE, respectively. In previous releases, SQL_REAL and SQL_DOUBLE mapped to the generic Oracle numeric data type. The OCI driver is a type 2 JDBC driver and uses native code to connect to the database. Thus, it is only an option on platforms that have native Oracle drivers available and it is not a 'pure' Java implementation. Oracle Thin Driver. Oracle's JDBC Thin driver is a type 4 JDBC Driver that uses Java sockets to connect directly to Oracle.

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