解决Oracle模拟事务提交、表锁，处理表锁问题_oracle_

# 我当前自动提交设置为OFF，即默认不自动提交 SYS@helowin>show autocommit; autocommit OFF # 可通过set命令，选择是否开启自动提交事务 SYS@helowin>set auto SP2-0281: autocommit missing set option Usage: SET AUTO[COMMIT] { OFF | ON | IMM[EDIATE] | n }

SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 1 a 2022-09-26

# 在终端一模拟插入一条数据，不commit SYS@helowin>insert into zxy.study values(2,'b','2022-09-26'); 1 row created. # 发现在当前终端中可以查到数据 # 在事务提交之前，只有操作数据库的这个人才能看到所做的事，别人只能等待提交后才可以 SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 2 b 2022-09-26 1 a 2022-09-26

# 在终端二中不能查到数据 SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 1 a 2022-09-26

SYS@helowin>commit; Commit complete. SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 2 b 2022-09-26 1 a 2022-09-26

SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 2 b 2022-09-26 1 a 2022-09-26

SYS@helowin>insert into zxy.study values(3,'c','2022-09-26'); 1 row created. SYS@helowin>select * from zxy.study; ID NAME TESTTIME ---------- -------------------- -------------------------------------------------- 2 b 2022-09-26 3 c 2022-09-26 1 a 2022-09-26

select sess.sid, sess.serial#, lo.oracle_username, lo.os_user_name, ao.object_name, lo.locked_mode from v$locked_object lo, dba_objects ao, v$session sess where ao.object_id = lo.object_id and lo.session_id = sess.sid;

alter system kill session 'sid,serial#';