num_rows-表中的行数blocks-所使用的数据块数量empty_blocks-空数据块的数量avg_space-自由空间的平均量chain_cnt-从一个数据块,或迁移到一个新块链接表中的行数avg_row_len-行表中的平均长度avg_space_freelist_blocks-一个freelist上的所有块的平均可用空间num_freelist_blocks-空闲列表上的块...
-表中的行数 blocks -所使用的数据块数量 empty_blocks -空数据块的数量 avg_space -自由空间的平均量 chain_cnt -从一个数据块，或迁移到一个新块链接表中的行数 avg_row_len -行表中的平均长度 avg_space_freelist_blocks -一个freelist上的所有块的平均可用空间 num_freelist_blocks -空闲...
column DISTINCT_KEYS heading "Distinct|Keys" format 9,999,999,990 column AVG_LEAF_BLOCKS_PER_KEY heading "Average|Leaf Blocks|Per Key" format 99,990 column AVG_DATA_BLOCKS_PER_KEY heading "Average|Data Blocks|Per Key" format 99,990 column CLUSTERING_FACTOR heading "Cluster|Factor" format 99...
SQL> select table_name,blocks,empty_blocks,num_rows,to_char(last_analyzed,'yyyy-mm-dd hh24:mi:ss'),row_movement from user_tables where table_name='TEST_SHRINK';--再次查看测试表相关信息 TABLE_NAME BLOCKS EMPTY_BLOCKS NUM_ROWS TO_CHAR(LAST_ANALYZ ROW_MOVE --- --- --- --- --- -...
an update to an existing row causes the row to outgrow its data block, then Oracle stores the row using multiple row pieces. A data block usually contains only one row piece for each row. When Oracle must store a row in more than one row piece, it is chained across multiple blocks. ...
select tablespace_name,sum(bytes), sum(blocks) from dba_free_space group by tablespace_name;//空闲表空间 select * from dba_data_files where tablespace_name=’RBS’;//表空间对应的数据文件 select * from dba_segments where tablespace_name=’INDEXS’; ...
user_tables 用户的表对象信息 user_tab_columns用户的表列信息 关于这个还涉及到两个常用的例子如下: 2.1.Oracle中查询某个字段属于哪个表 Sql代码 select table_name,owner from dba_tab_columns t where t.COLUMN_NAME like upper('%username%');
48 Understanding what symbol tables do and why saving them elsewhere can make your application smaller... 49 Choosing a debugging mode...
The 128 entries are arranged as two 64 entry blocks in a ping-pong scheme. On every new frame, the CCDC issues a request to the system DMA to transfer 64 entries. In order to allow time to fetch the fault pixels from SDRAM/DDRAM, the number of fault pixels to be corrected in a ...
blocks -fcx-fortran-rules -fcx-limited-range -fdata-sections -fdce -fdelayed-branch -fdelete-null-pointer-checks -fdevirtualize -fdse -fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects -ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=style -fforward-...