oracle常用经典SQL查询

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11。查看数据表的参数信息

SELECT   partition_name, high_value, high_value_length, tablespace_name,

        pct_free, pct_used, ini_trans, max_trans, initial_extent,

        next_extent, min_extent, max_extent, pct_increase, FREELISTS,

        freelist_groups, LOGGING, BUFFER_POOL, num_rows, blocks,

        empty_blocks, avg_space, chain_cnt, avg_row_len, sample_size,

        last_analyzed

   FROM dba_tab_partitions

  --WHERE table_name = :tname AND table_owner = :towner

ORDER BY partition_position

 

12.查看还没提交的事务

select * from v$locked_object;

select * from v$transaction;

 

13。查找object为哪些进程所用

select 

p.spid,

s.sid,

s.serial# serial_num,

s.username user_name,

a.type  object_type,

s.osuser os_user_name,

a.owner,

a.object object_name,

decode(sign(48 - command),

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