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上完1Z0-053第15章,52-13
- select * from v$block_change_tracking;
- select * from dba_Tables t where t.table_name='T05305';
- SELECT file#, avg(datafile_blocks), avg(blocks_read), avg(blocks_read/datafile_blocks)
- * 100 AS PCT_READ_FOR_BACKUP, avg(blocks)
- FROM v$backup_datafile
- WHERE used_change_tracking = 'YES'
- AND incremental_level > 0 and file#=1
- GROUP BY file#;
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