SQL之DDL导致的隐式提交

1. 如果DDL语法正确，即使执行失败，也会导致隐式提交：duzz$scott@orcl>create table t1 as select * from dept;Table created.Elapsed: 00:00:00.03duzz$scott@orcl>update t1 set loc="xx" where deptno=10;1 row updated.Elapsed: 00:00:00.03duzz$scott@orcl>drop table xx;drop table xx *ERROR at line 1:ORA-00942: table or view does not existElapsed: 00:00:00.01
+++++++++++++++++++++++++++++++++++++++++++++++++++++duzz$sys@orcl>select * from scott.t1; DEPTNO DNAME LOC---------- ------------------------------------------ --------------------------------------- 10 ACCOUNTING xx 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTONElapsed: 00:00:00.012. 如果DDL语法错误，则不会导致隐式提交，亦不会自动回滚事务：duzz$scott@orcl>update t1 set loc="yy" where deptno=20;1 row updated.Elapsed: 00:00:00.00duzz$scott@orcl>drop table col xx;drop table col xx *ERROR at line 1:ORA-00933: SQL command not properly endedElapsed: 00:00:00.00 +++++++++++++++++++++++++++++++++++++++++++++++++++++duzz$sys@orcl>select * from scott.t1; DEPTNO DNAME LOC---------- ------------------------------------------ --------------------------------------- 10 ACCOUNTING xx 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTONElapsed: 00:00:00.00总结：DDL伪代码：BeginParse DDL;Commit;Do DDL;ExceptionWhen others thenNull;End;Oracle EBS之Oracle Forms中的“WHEN-LEAVE-RECORD”触发器Oracle日期计算之INTERVAL相关资讯 Oracle教程

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