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select tablespace_name, file_name, sum(bytes)/1024/1024 table_size from dba_data_files group by tablespace_name,file_name;
 
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Oracle Rman¿çresetlogs°æ±¾»Ö¸´

RMAN> startup nomount;
RMAN> sql 'alter session set nls_date_format=''yyyy-mm-dd hh24:mi:ss''";
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RMAN> restore controlfile from autobackup until time '2009-03-10 18:15:00';
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oracle 10 em

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