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select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
from dba_tablespaces t, dba_data_files d
where t.tablespace_name = d.tablespace_name
group by t.tablespace_name;
 
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select tablespace_name, file_id, file_name,
round(bytes/(1024*1024),0) total_space
from dba_data_files
order by tablespace_name;
 
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select segment_name, tablespace_name, r.status,
(initial_extent/1024) InitialExtent,(next_extent/1024) NextExtent,
max_extents, v.curext CurExtent
from dba_rollback_segs r, v$rollstat v
Where r.segment_id = v.usn(+)
order by segment_name;
 
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select name from v$controlfile;
 
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select member from v$logfile;
 
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select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_name;
 
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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select owner, object_type, status, count(*) count# from all_objects group by owner, object_type, status;
 
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Select version from Product_component_version
Where SUBSTR(PRODUCT,1,6)='Oracle';
 
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Select Created, Log_Mode, Log_Mode from V$Database;
 
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column username format a12
column opname format a16
column progress format a8
 
select username,sid,opname,
      round(sofar*100 / totalwork,0) || '%' as progress,
      time_remaining,sql_text
from v$session_longops , v$sql
where time_remaining <>