Oracle--SQL_001

Oracle常用语句:

#查询用户下面的索引和约束情况:

select u.index_name,u.index_type,u.table_name,u.table_type,u.status,
       c.constraint_name,c.constraint_type,c.status
       from dba_indexes u
       left join dba_constraints c
       on u.table_owner=c.owner 
       where u.table_owner='SCOTT';


#查询dump文件位置:

select 'dump_file_path' from dual;
set linesize 100;
SELECT pa.value || '/' || i.instance_name || '_ora_' || pr.spid || '.trc' AS trace_file
FROM v\$session s, v\$process pr, v\$parameter pa, v\$instance i
WHERE s.username = USER
AND s.paddr = pr.addr
AND pa.name = 'user_dump_dest';       



#用户默认表空间和使用情况:


select listagg(username,',') within group(order by t.sizeed) "用户",
       default_tablespace "表空间名称",
       file_name "文件名",
       sizeed "大小"
from (
      select u.username,
             u.default_tablespace,
             d.file_name,
             round(sum(bytes)/1024/1024,2)||'M' sizeed
             from dba_users u,dba_data_files d
      where u.default_tablespace=d.tablespace_name
      group by u.username,
               u.user_id,
               u.default_tablespace,
               d.file_name
      ) t
  group by default_tablespace,
           file_name,
           sizeed


#查看用户下面执行top10的sql
SELECT * FROM 
(SELECT S.SQL_TEXT,S.SQL_FULLTEXT,
        S.SQL_ID,S.EXECUTIONS,
        S.ELAPSED_TIME,S.PARSING_USER_ID,
        U.USERNAME  
 FROM V$SQLAREA S 
 LEFT JOIN DBA_USERS U
    ON U.USER_ID=S.PARSING_USER_ID
WHERE S.EXECUTIONS>0
ORDER BY S.ELAPSED_TIME DESC)
WHERE ROWNUM<=10;        



#查看redo的大小

select s.name,m.value/1024/1024 M

from  v$statname s,v$sysstat m

where s.statistic#=m.statistic# and s.name like '%redo size%';


#查看ip地址信息

select user,sid,serial#,utl_inaddr.get_host_address as host,sys_context('USERENV','ip_ADDRESS') as local,SYSDATE from V$session;


#查看默认的临时表空间
select * from database_properties where property_name='DEFAULT_TEMP_TABLESPACE'

select tablespace_size/1024/1024||'M' "总大小",allocated_space/1024/1024||'M' "分配值",free_space/1024/1024||'M' "空闲大小" from dba_temp_free_space;