资源描述：
《oracle数据库元数据SQL查询》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、oracle数据库经典SQL查询1、查看表空间的名称及大小selectt.tablespace_name,round(sum(bytes/(1024*1024)),0)ts_sizefromdba_tablespacest,dba_data_filesdwheret.tablespace_name=d.tablespace_namegroupbyt.tablespace_name;2、查看表空间物理文件的名称及大小selecttablespace_name,file_id,file_name,round(bytes/(1024*10
2、24),0)total_spacefromdba_data_filesorderbytablespace_name;3、查看回滚段名称及大小selectsegment_name,tablespace_name,r.status,(initial_extent/1024)InitialExtent,(next_extent/1024)NextExtent,max_extents,v.curextCurExtentFromdba_rollback_segsr,v$rollstatvWherer.segment_id=v.usn(+)or
3、derbysegment_name;4、查看控制文件selectnamefromv$controlfile;5、查看日志文件selectmemberfromv$logfile;6、查看表空间的使用情况selectsum(bytes)/(1024*1024)asfree_space,tablespace_namefromdba_free_spacegroupbytablespace_name;SELECTA.TABLESPACE_NAME,A.BYTESTOTAL,B.BYTESUSED,C.BYTESFREE,(B.BYTES*10
4、0)/A.BYTES"%USED",(C.BYTES*100)/A.BYTES"%FREE".FROMSYS.SM$TS_AVAILA,SYS.SM$TS_USEDB,SYS.SM$TS_FREECWHEREA.TABLESPACE_NAME=B.TABLESPACE_NAMEANDA.TABLESPACE_NAME=C.TABLESPACE_NAME;7、查看数据库库对象selectowner,object_type,status,count(*)count#fromall_objectsgroupbyowner,object_t
5、ype,status;8、查看数据库的版本 SelectversionFROMProduct_component_versionWhereSUBSTR(PRODUCT,1,6)='Oracle';9、查看数据库的创建日期和归档方式SelectCreated,Log_Mode,Log_ModeFromV$Database;10、捕捉运行很久的SQLcolumnusernameformata12columnopnameformata16columnprogressformata8selectusername,sid,opname,rou
6、nd(sofar*100/totalwork,0)
7、
8、'%'asprogress,time_remaining,sql_textfromv$session_longops,v$sqlwheretime_remaining<>0andsql_address=addressandsql_hash_value=hash_value/11。查看数据表的参数信息SELECTpartition_name,high_value,high_value_length,tablespace_name,pct_free,pct_used,ini_tran
9、s,max_trans,initial_extent,next_extent,min_extent,max_extent,pct_increase,FREELISTS,freelist_groups,LOGGING,BUFFER_POOL,num_rows,blocks,empty_blocks,avg_space,chain_cnt,avg_row_len,sample_size,.last_analyzedFROMdba_tab_partitions--WHEREtable_name=:tnameANDtable_owner=:
10、townerORDERBYpartition_position12.查看还没提交的事务select*fromv$locked_object;select*fromv$transaction;13。查找object为哪些进程所用sele
