BlogJava-fast---fast-文章分类-oracle

自启动oracle

quick — Fri, 30 Dec 2005 07:51:00 GMT

打开root终端
#vi /etc/oratab
将ora9i:/home/oracle/product/:N (N该成Y)
#vi /ect/rc.local 加入
su – oracle –c “lsnrctl start”
su – oracle –c “startora”
在/bin目录下建startora文档，内容如下
sqlplus /nolog << EOF
connect sys/sys as sysdba
startup
EOF

quick 2005-12-30 15:51 发表评论

EXP-00008: 遇到 ORACLE 错误 3113

quick — Sat, 19 Nov 2005 07:18:00 GMT

EXP-00008: 遇到 ORACLE 错误 3113
ORA-03113: 通信通道的文件结束
EXP-00000: 导出终止失败

在 tnsnames.ora

增加        (SERVER = DEDICATED)

GDDB_ZH =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    )
    (CONNECT_DATA =
       (SERVER = DEDICATED)
       (SERVICE_NAME = gddb)
    )
)

quick 2005-11-19 15:18 发表评论

删除相同的记录

quick — Fri, 11 Nov 2005 06:44:00 GMT

删除相同的记录
找出相同的记录
select * from file_hanjian_info a where rowid !=(select max(rowid)
from file_hanjian_info b where a.docid=b.docid)

删除
delete from file_hanjian_info a where rowid !=(select max(rowid)
from file_hanjian_info b where a.docid=b.docid)

quick 2005-11-11 14:44 发表评论

oracle随机读取和复合主键删除

quick — Thu, 25 Aug 2005 09:52:00 GMT

随机读取数据--oracle

select * from ( select * from expert where name like '%%' order by dbms_random.random ) where rownum <= 10;

复合主键删除

1.先查出该联合主键的名字pk_all，如果已知，则省去此步骤，

select constraint_name from user_constraints where table_name=upper('tb1') and constraint_type='P';

2.删除该主键

alter table tb1 drop constraint pk_all cascade;

quick 2005-08-25 17:52 发表评论