1、AWR原始数据与AWR报告的差别
AWR原始数据：
是oracle数据库mmon进程定期将统计量从内存转储至磁盘，并以结构化的形式存入若干张表组成自己主动工作负荷存储仓库（AutomaticWorkload repository﹐简写为AWR）的原始数据，有经验的DBA能够自由的查询所须要的历史数据
AWR报告：
使用awrrpt.sql、awrrpti.sql、awrddrpt.sql、awrddrpi.sql所生成的为AWR报告，一般为保存为HTML或TXT格式文件，使用Toad等工具生成的AWR报告也是通过调用上面几个sql脚本所生成的。我们所示是已经分析好或已经排版好了的在一段时间内的报告文件
2、AWR原始数据导出的意义
（1）起到备份的作用
（2）导出后，导入到其他数据库中进行深度分析
3、awrextr.sql存放位置
（1）存放路径：$ORACLE_HOME/rdbms/admin
（2）查看存在情况
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[root@INFA ~]# su - oracle [oracle@INFA ~]$ cd $ORACLE_HOME/rdbms/admin [oracle@INFA admin]$ ls -l |grep awrextr.sql -rw-r--r--. 1 oracle oinstall 11082 Mar 24 2009 awrextr.sql |
4、使用awrextr.sql前提条件准备（创建directory）
使用awrextr.sql，数据库中必须具有directory
4.1 在操作系统上创建directory的文件夹
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[root@INFA ~]# mkdir -p /u01/awr_extr [root@INFA ~]# chown -R oracle:oinstall /u01/awr_extr |
4.2 在数据库上创建directory
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SQL> create directory awr_extr as '/u01/awr_extr'; Directory created. |
5、使用awrextr.sql导出awr数据
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SQL> @?/rdbms/admin/awrextr.sql ~~~~~~~~~~~~~ AWR EXTRACT ~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ This script will extract the AWR data for a range of snapshots ~ ~ into a dump file. The script will prompt users for the ~ ~ following information: ~ ~ (1) database id ~ ~ (2) snapshot range to extract ~ ~ (3) name of directory object ~ ~ (4) name of dump file ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Databases in this Workload Repository schema ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DB Id DB Name Host ------------ ------------ ------------ * 3248492087 INFADB INFA 1542553735 CRMOUT TSRRAC01 1542553735 CRMOUT TSRRAC02 The default database id is the local one: '3248492087'. To use this database id, press <return> to continue, otherwise enter an alternative. Enter value for dbid: 3248492087 --输入需导出AWR数据库的DBID Using 3248492087 for Database ID Specify the number of days of snapshots to choose from ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Entering the number of days (n) will result in the most recent (n) days of snapshots being listed. Pressing <return> without specifying a number lists all completed snapshots. Enter value for num_days: 1 --输入须要导出AWR数据所选择的天数 Listing the last day's Completed Snapshots DB Name Snap Id Snap Started ------------ --------- ------------------ INFADB 612 03 Aug 2014 00:06 613 03 Aug 2014 00:15 614 03 Aug 2014 00:30 615 03 Aug 2014 00:45 616 03 Aug 2014 01:00 617 03 Aug 2014 01:15 618 03 Aug 2014 01:30 619 03 Aug 2014 01:45 620 03 Aug 2014 02:00 621 03 Aug 2014 02:15 Specify the Begin and End Snapshot Ids ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Enter value for begin_snap: 612 --选择開始snap_id号 Begin Snapshot Id specified: 612 Enter value for end_snap: 620 --选择结束snap_id号 End Snapshot Id specified: 620 Specify the Directory Name ~~~~~~~~~~~~~~~~~~~~~~~~~~ Directory Name Directory Path ------------------------------ ------------------------------------------------- AWR_EXTR /u01/awr_extr DATA_PUMP_DIR /dba/oracle/admin/infadb/dpdump/ EXPDP_DIR /u01/expdp_dir ORACLE_OCM_CONFIG_DIR /dba/oracle/product/11.2.0/db_1/ccr/state XMLDIR /dba/oracle/product/11.2.0/db_1/rdbms/xml Choose a Directory Name from the above list (case-sensitive). Enter value for directory_name: AWR_EXTR --输入存放导出dump档的directory名称 Using the dump directory: AWR_EXTR Specify the Name of the Extract Dump File ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The prefix for the default dump file name is awrdat_612_620. To use this name, press <return> to continue, otherwise enter an alternative. Enter value for file_name: awr_dump_612_620 --输入dump档名称，注意仅仅要带.dmp后缀 Using the dump file prefix: awr_dump_612_620 | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | The AWR extract dump file will be located | in the following directory/file: | /u01/awr_extr | awr_dump_612_620.dmp --dump文件名自己主动带上了.dmp后缀 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | *** AWR Extract Started ... | | This operation will take a few moments. The | progress of the AWR extract operation can be | monitored in the following directory/file: | /u01/awr_extr | awr_dump_612_620.log | End of AWR Extract SQL> |
6、查看dump文件是否存在
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[oracle@INFA ~]$ cd /u01/awr_extr [oracle@INFA awr_extr]$ ls -l total 12780 -rw-r-----. 1 oracle oinstall 13058048 Aug 3 02:18 awr_dump_612_620.dmp -rw-r--r--. 1 oracle oinstall 25359 Aug 3 02:18 awr_dump_612_620.log |
不仅看到了导出的dmp文件，还看到了导出的log文件，导出成功。
本文作者：黎俊杰（网名：踩点），从事”系统架构、操作系统、存储设备、数据库、中间件、应用程序“六个层面系统性的性能优化工作
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