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10g新特性之-expdp与传统exp的速度比较

王朝other·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

测试环境:

System Configuration: Sun Microsystems sun4u Sun Enterprise 450 (4 X UltrASPARC-II 296MHz)

System clock frequency: 99 MHz

Memory size: 2048 Megabytes

数据量:

单表测试,1363292行记录,116.6 MB左右数据

1.使用并行 eXPdp

花费时间:

Tue Apr 27 10:21:54 CST 2004 - Tue Apr 27 10:21:10 CST 2004 = 43秒

$ cat bak.sh

date

expdp eygle/eygle dumpfile=big_big_table.dmp Directory=dpdata tables=big_big_table job_name=exptab parallel=4

date

$ ./bak.sh

Tue Apr 27 10:21:10 CST 2004

Export: Release 10.1.0.2.0 - 64bit ProdUCtion on Tuesday, 27 April, 2004 10:21

Copyright (c) 2003, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Starting "EYGLE"."EXPTAB": eygle/******** dumpfile=big_big_table.dmp directory=dpdata tables=big_big_table job_name=exptab parallel=4

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TBL_TABLE_DATA/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 248 MB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "EYGLE"."BIG_BIG_TABLE" 116.6 MB 1363292 rows

Master table "EYGLE"."EXPTAB" successfully loaded/unloaded

******************************************************************************

Dump file set for EYGLE.EXPTAB is:

/opt/oracle/dpdata/big_big_table.dmp

Job "EYGLE"."EXPTAB" successfully completed at 10:21

Tue Apr 27 10:21:54 CST 2004

2.使用正常 expdp

花费时间:

Tue Apr 27 10:23:36 CST 2004 - Tue Apr 27 10:23:02 CST 2004 = 34 秒

看来并行的差异需要更大的数据量的测试

$ cat bak2.sh

date

expdp eygle/eygle dumpfile=big_big_table2.dmp directory=dpdata tables=big_big_table job_name=exptab

date

$ ./bak2.sh

Tue Apr 27 10:23:02 CST 2004

Export: Release 10.1.0.2.0 - 64bit Production on Tuesday, 27 April, 2004 10:23

Copyright (c) 2003, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning,

OLAP and Data Mining options

Starting "EYGLE"."EXPTAB": eygle/******** dumpfile=big_big_table2.dmp directory=dpdata tables=big_big_table job_name=exptab

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TBL_TABLE_DATA/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 248 MB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "EYGLE"."BIG_BIG_TABLE" 116.6 MB 1363292 rows

Master table "EYGLE"."EXPTAB" successfully loaded/unloaded

******************************************************************************

Dump file set for EYGLE.EXPTAB is:

/opt/oracle/dpdata/big_big_table2.dmp

Job "EYGLE"."EXPTAB" successfully completed at 10:23

Tue Apr 27 10:23:36 CST 2004

3.常规路径exp

花费时间:Tue Apr 27 10:27:00 CST 2004 - Tue Apr 27 10:24:54 CST 2004 = 2:06

这是花费时间最长的.

是 126/34 = 370.58823529411764705882352941176%

expdp明显快于exp

$ cat bak3.sh

date

exp eygle/eygle file=big_big_table3.dmp tables=big_big_table

date

$ ./bak3.sh

Tue Apr 27 10:24:54 CST 2004

Export: Release 10.1.0.2.0 - Production on Tue Apr 27 10:24:54 2004

Copyright (c) 1982, 2004, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Export done in ZHS16GBK character set and AL16UTF16 NCHAR character set

About to export specified tables via Conventional Path ...

. . exporting table BIG_BIG_TABLE 1363292 rows exported

Export terminated successfully without warnings.

Tue Apr 27 10:27:00 CST 2004

4.直接路径exp

花费时间:

Tue Apr 27 10:52:09 CST 2004 - Tue Apr 27 10:50:58 CST 2004 = 1.11

是 71/34 = 208.82352941176470588235294117647%

直接路径导出快于常规路径导出,但是仍然不敌expdp

$ cat bak4.sh

date

exp eygle/eygle file=big_big_table3.dmp tables=big_big_table direct=y

date

$ ./bak4.sh

Tue Apr 27 10:50:58 CST 2004

Export: Release 10.1.0.2.0 - Production on Tue Apr 27 10:50:58 2004

Copyright (c) 1982, 2004, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Export done in ZHS16GBK character set and AL16UTF16 NCHAR character set

About to export specified tables via Direct Path ...

. . exporting table BIG_BIG_TABLE 1363292 rows exported

Export terminated successfully without warnings.

Tue Apr 27 10:52:09 CST 2004

5.文件大小

传统方式exp文件要大于expdp的文件大小

大约大出10M左右.

$ ls -al

total 741566

drwxr-xr-x 2 oracle dba 512 Apr 27 10:50 .

drwxr-xr-x 23 oracle dba 1024 Apr 26 22:53 ..

-rwxr-xr-x 1 oracle dba 120 Apr 27 10:21 bak.sh

-rwxr-xr-x 1 oracle dba 111 Apr 27 10:22 bak2.sh

-rwxr-xr-x 1 oracle dba 71 Apr 27 10:24 bak3.sh

-rwxr-xr-x 1 oracle dba 80 Apr 27 10:50 bak4.sh

-rw-r----- 1 oracle dba 122413056 Apr 27 10:21 big_big_table.dmp

-rw-r----- 1 oracle dba 122417152 Apr 27 10:23 big_big_table2.dmp

-rw-r--r-- 1 oracle dba 134604800 Apr 27 10:52 big_big_table3.dmp

-rw-r--r-- 1 oracle dba 965 Apr 27 10:23 export.log

以下是导入测试:

6. imp测试

花费时间: Tue Apr 27 11:15:11 CST 2004 - Tue Apr 27 11:08:24 CST 2004 = 6:47s

$ cat rev2.sh

date

imp eygle/eygle file=big_big_table3.dmp tables=big_big_table

date

$ ./rev2.sh

Tue Apr 27 11:08:24 CST 2004

Import: Release 10.1.0.2.0 - Production on Tue Apr 27 11:08:24 2004

Copyright (c) 1982,

2004, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Export file created by EXPORT:V10.01.00 via direct path

import done in ZHS16GBK character set and AL16UTF16 NCHAR character set

. importing EYGLE's objects into EYGLE

. . importing table "BIG_BIG_TABLE" 1363292 rows imported

Import terminated successfully without warnings.

Tue Apr 27 11:15:11 CST 2004

$

7. impdp

花费时间: Tue Apr 27 11:07:06 CST 2004 - Tue Apr 27 11:06:40 CST 2004 = 26s

与imp相比这个速度实在是惊人.

407/26 = 1565.3846153846153846153846153846%

无怪乎Oracle说impdp才是data pump真正杰出的地方(really stands out)

$ ./rev.sh

Tue Apr 27 11:06:40 CST 2004

Import: Release 10.1.0.2.0 - 64bit Production on Tuesday, 27 April, 2004 11:06

Copyright (c) 2003, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "EYGLE"."IMPTAB" successfully loaded/unloaded

Starting "EYGLE"."IMPTAB": eygle/******** dumpfile=big_big_table.dmp tables=big_big_table directory=dpdata job_name=imptab

Processing object type TABLE_EXPORT/TABLE/TABLE

Processing object type TABLE_EXPORT/TABLE/TBL_TABLE_DATA/TABLE/TABLE_DATA

. . imported "EYGLE"."BIG_BIG_TABLE" 116.6 MB 1363292 rows

Job "EYGLE"."IMPTAB" successfully completed at 11:07

Tue Apr 27 11:07:06 CST 2004

 
 
 
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