oracle10g客户端能访问12c,彪悍的Oracle 12C,飞一般的性能提升—–Oracle 10G 11g 12c性能指标测试实践...
说明
Oracle 12.2.0.1于2017年3月提供下载，star童鞋有个疑问，Oracle 12c到底有多牛x,和我们大部分客户正在运行的10G 、11G对比性能指标有多大提升？？？
测试结果
部分测试过程
10.2.0.5
SQL*Plus: Release 10.2.0.5.0 - Production on Fri Mar 17 22:03:11 2017
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
SQL> exec dbms_stats.gather_table_stats('HT','HT1');
PL/SQL procedure successfully completed.
SQL> set autot on
set timing on
set line 999
select count(1) from ht.ht1;
COUNT(1)
----------
10000000
Elapsed: 00:00:19.22
Execution Plan
----------------------------------------------------------
Plan hash value: 46654064
-------------------------------------------------------------------
| Id | Operation | Name | Rows | Cost (%CPU)| Time |
-------------------------------------------------------------------
| 0 | SELECT STATEMENT | |1 | 41671 (1)| 00:08:21 |
| 1 | SORT AGGREGATE | |1 | | |
| 2 | TABLE ACCESS FULL| HT1 | 10000K| 41671 (1)| 00:08:21 |
-------------------------------------------------------------------
Statistics
----------------------------------------------------------
1 recursive calls
0 db block gets
188900 consistent gets
88827 physical reads
0 redo size
518 bytes sent via SQL*Net to client
492 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1rows processed
Elapsed: 00:00:19.22
11.2.0.4
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> set autot on
set timing on
set line 999
select count(1) from ht.ht1;
COUNT(1)
----------
10000000
Elapsed: 00:00:11.81
Execution Plan
----------------------------------------------------------
Plan hash value: 46654064
-------------------------------------------------------------------
| Id | Operation | Name | Rows | Cost (%CPU)| Time |
-------------------------------------------------------------------
| 0 | SELECT STATEMENT | |1 | 51440 (1)| 00:10:18 |
| 1 | SORT AGGREGATE | |1 | | |
| 2 | TABLE ACCESS FULL| HT1 | 10000K| 51440 (1)| 00:10:18 |
-------------------------------------------------------------------
Statistics
----------------------------------------------------------
1 recursive calls
0 db block gets
188883 consistent gets
188877 physical reads
0 redo size
529 bytes sent via SQL*Net to client
520 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1rows processed
Elapsed: 00:00:11.81
12.2.0.1
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> select count(1) from ht.ht1;
COUNT(1)
----------
10000000
Elapsed: 00:00:00.91
Execution Plan
----------------------------------------------------------
Plan hash value: 46654064
-------------------------------------------------------------------
| Id | Operation | Name | Rows | Cost (%CPU)| Time |
-------------------------------------------------------------------
| 0 | SELECT STATEMENT | |1 | 51397 (1)| 00:00:03 |
| 1 | SORT AGGREGATE | |1 | | |
| 2 | TABLE ACCESS FULL| HT1 | 10000K| 51397 (1)| 00:00:03 |
-------------------------------------------------------------------
Statistics
----------------------------------------------------------
898 recursive calls
0 db block gets
190867 consistent gets
189044 physical reads
0 redo size
545 bytes sent via SQL*Net to client
552 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
332 sorts (memory)
0 sorts (disk)
1 rows processed
SQL> /
COUNT(1)
----------
10000000
Elapsed: 00:00:00.91
说明：相同数据量全表扫描，
10G耗时：Elapsed: 00:00:19.22；
11G耗时：Elapsed: 00:00:11.81；
12C耗时：Elapsed: 00:00:00.91，12C与10G比较全表扫描性能提升21.12倍，12C与11G比较全表扫描性能提升12.97倍；通过以上测试及数据比较，12C性能显著提升。
测试总结
与10G相比12C平均性能提升20倍，与11G相比全表查询性能提升10倍以上，部分数据查询性能提升2倍以上。