Re: Shrinking a tablespace

Hi Sowmya, You have not mentioned the Database you are using. However you can find the below link useful. It is relevant with Oracle Database. http://scn.sap.com/people/glenn.cadman/blog/2011/01/02/real-life-shrinking-or-removing-oracle-datafiles Just for a quick access to your question. "How can I find out which datafile contains data" Please consult the below sql query.

-- -- Displays Space Usage for Each Datafile.

-- SET PAUSE ON SET PAUSE 'Press Return to Continue'
SET PAGESIZE 60 SET LINESIZE 300 COLUMN "Tablespace Name" FORMAT A20 COLUMN "File Name" FORMAT A80 SELECT  Substr(df.tablespace_name,1,20) "Tablespace Name",  Substr(df.file_name,1,80) "File Name", Round(df.bytes/1024/1024,0) "Size (M)",        decode(e.used_bytes,NULL,0,Round(e.used_bytes/1024/1024,0)) "Used (M)", decode(f.free_bytes,NULL,0,Round(f.free_bytes/1024/1024,0)) "Free (M)",        decode(e.used_bytes,NULL,0,Round((e.used_bytes/df.bytes)*100,0)) "% Used" FROM    DBA_DATA_FILES DF,
    (SELECT file_id,              sum(bytes) used_bytes FROM dba_extents GROUP by file_id) E,
      (SELECT Max(bytes) free_bytes, file_id        FROM dba_free_space        GROUP BY file_id) f WHERE e.file_id (+) = df.file_id AND      df.file_id  = f.file_id (+) ORDER BY df.tablespace_name,        df.file_name
/

Kindly let us know the result of your observation.

Thanks and Regards Anurag