工作日志：2亿记录的exp导出时间记录

原创 eygle 2009-09-26

617

一个短信表的分区，使用direct模式导出：
exp sms/sms file=smsmg_p7.dmp tables=SMSMG:M07 direct=y recordlength=65535 statistics=none

导出时间大约28分钟：

Export: Release 10.2.0.2.0 - Production on Fri Sep 25 22:59:33 2009

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, 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 SMSMG
. . exporting partition M07 256466785 rows exported
Export terminated successfully without warnings.
42.33user 666.59system 28:02.65elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (27major+3131minor)pagefaults 0swaps

导出文件大小为59G左右：
-rw-r--r-- 1 oracle oinstall 63306875535 Sep 25 23:27 smsmg_p7.dmp

主机为4颗4核处理器：

[root@sms proc]# cat cpuinfo |grep CPU
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7330 @ 2.40GHz

exp的性能还是可以接受的。

-The End-

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工作日志：2亿记录的exp导出时间记录

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