标签:mic sys cancel sele 信息 image alt weight source
18c官方文档《Database Administrator’s Guide》中有介绍,关于取消会话的sql事务有新增特性,可以使用ALTER SYSTEM CANCEL SQL。。对事务取消,具体使用方法如下:
##session 1 SQL> select sid, serial# from v$session where sid = userenv(‘SID‘); SID SERIAL# ---------- ---------- 25 29476 SQL> create table t_source as select * from dba_source where 1=2; Table created. SQL> select count(*) from t_source; COUNT(*) ---------- 0 SQL> insert into t_source select * from dba_source; 292640 rows created. <========================== 备注此时的总记录数 SQL> insert into t_source select * from dba_source;
正在执行第2次insert时,在另外一个session执行取消操作。
##session 2 SQL> alter system cancel sql ‘25,29476‘; System altered.
检查session 1 此时的执行信息。
##session 1 SQL> insert into t_source select * from dba_source; insert into t_source select * from dba_source * ERROR at line 1: ORA-01013: user requested cancel of current operation SQL> select count(*) from t_source; COUNT(*) ---------- 292640 <========================== 记录数和第2次插入之前一样
这里可以看到第2次插入的记录已经回滚。
Oracle 18C新特性:ALTER SYSTEM CANCEL SQL
标签:mic sys cancel sele 信息 image alt weight source
原文地址:https://www.cnblogs.com/bicewow/p/12418676.html