markdown 甲骨文创建索引和杀死进程

Posted 2021-05-06

# Oracle创建索引和kill进程

Oracle在Update数据时能把人慢死，我update3万条数据，1小时都弄不出来

创建个索引就行了，但是我由于之前PL SQL异常关闭，导致创建不了，报错

## kill session

```
ORA-00054: resource busy and acquire with NOWAIT specified
```

sysdba登录用下面的命令
```
SQL> select t2.username, t2.sid, t2.serial#, t2.logon_time
from v$locked_object t1, v$session t2
where t1.session_id = t2.sid
order by t2.logon_time;
```

看看是哪个session卡住了

```
USERNAME			      SID    SERIAL# LOGON_TIME
------------------------------ ---------- ---------- ------------
SCOTT				      140	3555 28-MAR-17
SCOTT				       18	3361 28-MAR-17
```

kill掉，逗号前面是sid，后面是serial#

```
SQL> alter system kill session '140,3555';

System altered.

SQL> alter system kill session '18,3361';

System altered.
```

## 创建索引

```
create index tmp3_index on tmp3(companyname);
```

再次update，尼玛3W条数据0.419秒就搞完了