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[数据库]oracle查看对象信息


1.查看某用户下所有对象的信息:

SELECT owner, object_type, status, COUNT(*) count# FROM all_objects where owner='xxx'GROUP BY owner, object_type, statusorder by 2; 

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2.查看表行数(多个表)(需先分析表):

1 select 'analyze table '|| table_name||' compute statistics;' from user_tables;2 3 select table_name,num_rows from dba_tables where owner='WEBAGENT' order by 1;4 5 select count(*) from WITHDRAWAL_ORG;

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3.查看表空间大小:

SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024*1024)), 0) ts_size_GBFROM dba_tablespaces t, dba_data_files d WHERE t.tablespace_name = d.tablespace_name GROUP BY t.tablespace_name; 

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4.查看表空间的使用情况:

SELECT tablespace_name ,SUM(bytes) / (1024 * 1024) AS free_space_MGFROM dba_free_space GROUP BY tablespace_name; 

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SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name;

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5.查看表空间物理文件的名称及大小:

SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024*1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name;

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6.查正在执行的sql和执行过的sql:

  a.查询正在执行的sql

select a.username, a.sid,b.SQL_TEXT, b.SQL_FULLTEXT from v$session a, v$sqlarea b where a.sql_address = b.address;

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  b.查询指定时间内执行过的sql

select b.SQL_TEXT,b.FIRST_LOAD_TIME,b.SQL_FULLTEXT from v$sqlarea bwhere b.FIRST_LOAD_TIME between '2009-10-15/09:24:47' and    '2009-10-15/09:24:47' order by b.FIRST_LOAD_TIME 

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7.回收站:

1 drop table t1 purge;2 purge recyclebin;

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8.监控oracle的等待事件:

select event,    sum(decode(wait_Time, 0, 0, 1)) "Prev",    sum(decode(wait_Time, 0, 1, 0)) "Curr",    count(*) "Tot" from v$session_Wait group by event order by 4;

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9.统计模式内的对象信息:

  a.查看当前schema的对象信息

select object_type,count(*) from user_objects group by object_type;

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  b.sys用户下查看指定schema的对象信息

select SEGMENT_TYPE,COUNT(*) from dba_segments where tablespace_name='TSP_WEBAGENT' GROUP BY SEGMENT_TYPE;

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