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1Z0-053第5章
1Z0-052共19章(上完12章),1Z0-053共21章(上完9章)和1Z0-063多租户部分共9章(上完0章)
总共上完全部49章中的21章
- select * from v$block_change_tracking;
- alter database disable block change tracking;
- alter database enable block change tracking using file '+FRA';
- SELECT file#, avg(datafile_blocks),
- avg(blocks_read),
- avg(blocks_read/datafile_blocks)
- * 100 AS PCT_READ_FOR_BACKUP,
- avg(blocks)
- FROM v$backup_datafile
- WHERE used_change_tracking = 'YES'
- AND incremental_level > 0
- GROUP BY file#;
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