jConnect supports large object (LOB) locators. A LOB locator contains a logical pointer to LOB data rather than the data itself, reducing the amount of data that passes through the network between Adaptive Server and its clients.
Server support for LOB locators was introduced in Adaptive Server 15.7.
jConnect accesses LOB data using server-side locators when connected to an Adaptive Server that supports LOB locators and autocommit is turned off. Otherwise, jConnect materializes LOB data at the client side. You can use the complete LOB API with client-side materialized LOB data, however, due to larger data, API performance may be different than when used with LOB locators.
To enable LOB locator support, establish a connection to Adaptive Server with the ENABLE_LOB_LOCATORS connection property set to true. When enabled, client applications can access the locators using the Blob, Clob, and NClob classes from the java.sql package.
For information about the Blob, Clob, and NClob classes, see the Java documentation.