oracle基本查看包括表,用户,索引,视图,表空间,约束等.doc

查看当前用户每个表占用空间的大小：Select Segment_Name,Sum(bytes)/1024/1024 From User_Extents Group By Segment_Name查看每个表空间占用空间的大小：Select Tablespace_Name,Sum(bytes)/1024/1024 From Dba_Segments Group By Tablespace_Name查看Oracle当前用户下的信息（用户，表视图，索引，表空间，同义词，存储过程函数，约束条件）0、表空间SQLselect username,default_tablespace from user_users;查看当前用户的角色SQLselect * from user_role_privs;查看表空间select * from dba_tablespaces查看表空间文件路径 select tablespace_name,file_id,bytes/1024/1024,file_name from dba_data_files order by file_id;查看用户和默认表空间的关系select username,default_tablespace from dba_users;查看当前用户的系统权限和表级权限SQLselect * from user_sys_privs;SQLselect * from user_tab_privs;查看用户下所有的表SQLselect * from user_tables;1、用户查看当前用户的缺省表空间SQLselect username,default_tablespace from user_users;查看当前用户的角色SQLselect * from user_role_privs;查看当前用户的系统权限和表级权限SQLselect * from user_sys_privs;SQLselect * from user_tab_privs;显示当前会话所具有的权限SQLselect * from session_privs;显示指定用户所具有的系统权限SQLselect * from dba_sys_privs where grantee=GAME;2、表查看用户下所有的表SQLselect * from user_tables;SELECT * FROM ALL_TABLES;查看名称包含log字符的表SQLselect object_name,object_id from user_objectswhere instr(object_name,LOG)0;查看名称包含log字符的字段SQLselect * from all_col_comments where column_name = log Or column_name =LOG;查看某表的创建时间SQLselect object_name,created from user_objects where object_name=upper(&table_name);查看某表的大小SQLselect sum(bytes)/(1024*1024) as size(M) from user_segmentswhere segment_name=upper(&table_name);查看放在ORACLE的内存区里的表SQLselect table_name,cache from user_tables where instr(cache,Y)0;3、索引查看索引个数和类别SQLselect index_name,index_type,table_name from user_indexes order by table_name;查看索引被索引的字段SQLselect * from user_ind_columns where index_name=upper(&index_name);查看索引的大小SQLselect sum(bytes)/(1024*1024) as size(M) from user_segmentswhere segment_name=upper(&index_name);4、序列号查看序列号，last_number是当前值SQLselect * from user_sequences;5、视图查看视图的名称SQLselect view_name from user_views;查看创建视图的select语句SQLset view_name,text_length from user_views;SQLset long 2000; 说明：可以根据视图的text_length值设定set long 的大小SQLselect text from user_views where view_name=upper(&view_name);6、同义词查看同义词的名称SQLselect * from user_synonyms;SELECT * FROM ALL_SYSNONYMS;7、约束条件查看某表的约束条件SQLselect constraint_name, constraint_type,search_condition, r_constraint_namefrom user_constraints where table_name = upper(&table_name);SQLselect c.constraint_name,c.constraint_type,cc.column_namefrom user_constraints c,user_cons_columns ccwhere c.owner = upper(&table_owner) and c.table_name = upper(&table_name)and c.owner = cc.owner and c.constraint_name = cc.constraint_nameorder by cc.position;8、存储函数和过程查看函数和过程的状态SQLselect object_name,status from user_objects where object_type=FUNCTION;SQLselect object_name,status from user_objects w