Although you have now configured your test server with an Oracle XA JDBC data source, you may also need to configure the Oracle database itself to support XA transactions.
尽管您已经用OracleXAJDBC数据源配置了您的测试服务器，但还需要对Oracle数据库自身进行配置以使其支持xa事务。
She creates a test schema, DEMO, in her Oracle 11 database instance in order to continue her development on that platform.
她在Oracle11数据库实例中创建了一个测试模式DEMO，以继续在该平台上进行开发。
She wants to copy these tables to her Oracle test database in order to determine if the structure and application changes she has made are suitable in that environment.
她想要将这些表复制到Oracle测试数据库，以确定她进行的结构和应用程序更改是否适合Oracle环境。
Whatever is entered as empty string in Oracle gets stored as NULL internally in the database. The following shows an example of a TEST table created in Oracle and db2.
在Oracle中，输入的空字符串在数据库内部存储为NULL。
Whatever is entered as empty string in Oracle gets stored as NULL internally in the database. The following shows an example of a TEST table created in Oracle and db2.
在Oracle中，输入的空字符串在数据库内部存储为NULL。
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