Expert Oracle Exadata - Parent Directory

CHAPTER 3 HYBRID COLUMNAR COMPRESSIONnormal Oracle block format. This is not a table we would expect to be highly compressible. Here are thebasic table statistics and the compression ratios:==========================================================================================Table Statistics==========================================================================================TABLE_NAME: SEELAST_ANALYZED : 29-SEP-2010 00:02:15DEGREE : 8PARTITIONED: YESNUM_ROWS : 1474776874CHAIN_CNT : 0BLOCKS : 57532731EMPTY_BLOCKS : 0AVG_SPACE : 0AVG_ROW_LEN : 282MONITORING: YESSAMPLE_SIZE : 1474776874TOTALSIZE_MEGS : 455821===========================================================================================SYS@POC1> @comp_ratioEnter value for original_size: 455821Enter value for owner: KSOEnter value for table_name: SEE_HCC%Enter value for type:OWNER SEGMENT_NAME TYPE TOTALSIZE_MEGS COMPRESSION_RATIO---------- -------------------- ------------------ -------------- -----------------KSO SEE_HCC1 TABLE 168,690.1 2.7KSO SEE_HCC2 TABLE 96,142.1 4.7KSO SEE_HCC3 TABLE 87,450.8 5.2KSO SEE_HCC4 TABLE 72,319.1 6.3--------------sum 424,602.1Financial DataThe next table is made up of financial data, revenue accrual data from an order entry system to be exact.Here are the basic table statistics.=====================================================================================Table Statistics=====================================================================================TABLE_NAME: REV_ACCRUALLAST_ANALYZED : 07-JAN-2011 00:42:47DEGREE : 1PARTITIONED: YESNUM_ROWS : 114736686CHAIN_CNT : 097