常用oracle SQL语句

1:创建dblink
create database link dblink_name
  connect to userA IDENTIFIED BY userA
  using '192.168.0.1/ora92';

2:查看表空间
select dbf.tablespace_name,
dbf.totalspace "总量(M)",
dbf.totalblocks as 总块数,
dfs.freespace "剩余总量(M)",
dfs.freeblocks "剩余块数",
(dfs.freespace / dbf.totalspace) * 100 "空闲比例"
from (select t.tablespace_name,
sum(t.bytes) / 1024 / 1024 totalspace,
sum(t.blocks) totalblocks
from dba_data_files t
group by t.tablespace_name) dbf,
(select tt.tablespace_name,
sum(tt.bytes) / 1024 / 1024 freespace,
sum(tt.blocks) freeblocks
from dba_free_space tt
group by tt.tablespace_name) dfs
where trim(dbf.tablespace_name) = trim(dfs.tablespace_name)

3:创建表空间
CREATE TABLESPACE MARRYDB_USER
DATAFILE '/app/oracle/oradata/user0.dbf ' SIZE 500M
AUTOEXTEND ON NEXT 50M MAXSIZE UNLIMITED LOGGING EXTENT MANAGEMENT  LOCAL SEGMENT SPACE MANAGEMENT AUTO

4:查看表空间文件:
select * from dba_data_files

5:创建临时表空间:
CREATE TEMPORARY TABLESPACE temp_data
TEMPFILE '/oracle/oradata/db/TEMP_DATA.dbf' SIZE 50M

6.增加数据文件
ALTER TABLESPACE game
ADD DATAFILE '/oracle/oradata/db/GAME02.dbf' SIZE 1000M;

7.手动增加数据文件尺寸
ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf'
RESIZE 4000M;

8.设定数据文件自动扩展
ALTER DATABASE DATAFILE '/oracle/oradata/db/GAME.dbf
AUTOEXTEND ON NEXT 100M
MAXSIZE 10000M;

9:查看临时表空间文件
SELECT D.TABLESPACE_NAME,SPACE "SUM_SPACE(M)",BLOCKS SUM_BLOCKS,
USED_SPACE "USED_SPACE(M)",ROUND(NVL(USED_SPACE,0)/SPACE*100,2) "USED_RATE(%)",
NVL(FREE_SPACE,0) "FREE_SPACE(M)"
FROM
(SELECT TABLESPACE_NAME,ROUND(SUM(BYTES)/(1024*1024),2) SPACE,SUM(BLOCKS) BLOCKS
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE_NAME,ROUND(SUM(BYTES_USED)/(1024*1024),2) USED_SPACE,
ROUND(SUM(BYTES_FREE)/(1024*1024),2) FREE_SPACE
FROM V$TEMP_SPACE_HEADER
GROUP BY TABLESPACE_NAME) F
WHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)

10:修改字段
ALTER TABLE tableA
MODIFY valid_flag NUMBER(1) NOT NULL

11:查询当前用户下的存储过程
SELECT *
FROM user_source
WHERE type='PROCEDURE'
AND name='INSERT_DICTIONARY'