Oracle Common Dump command
Memory Dumps
1). Global Area
ALTER session SET The EVENTS ' immediatetrace name Global_area level n ';
1 contains PGA 2 contains SGA 4 contains UGA 8 contains indrect memory
2). Library Cache
ALTER session SET The EVENTS '
One, Oracle trace fileThere are three types of Oracle trace files, a background alarm log file that records the activity of the background process during startup, shutdown, and operation of the database, such as tablespace creation, rollback segment
One, Oracle trace FileOracle trace files are grouped into three categories:
One is the background alarm log file that records the activity of the background process during startup, shutdown, and running of the database , such as table space
I,OracleTracking FileThere are three types of Oracle tracking files:
One is the background alarm log file, which recordsDatabaseActivities of background processes during startup, shutdown, and running, such as creating tablespaces, creating
SystemState Dump introduction by janezhang-oracle on December 13, 2012When a database has a serious performance problem or hang, we are very much in need of systemstate dump to know what the process is doing, waiting for what, who is the resource
1.1UseOradebug- -Start taskOradebug Setmypid-- Set the name of the dump file to indicateAlter session Set Tracefile_identifier=undo-- view dump fileSql> Oradebug Tracefile_name;C:\opt\oracle\product\10.2.0\admin\rundb\udump\rundb_ora_6660_pra1.trc--
http://www.cnblogs.com/chenmh/p/5300370.html IntroductionIn daily maintenance work often need to export the data, and mysqldump is to export the data process is a very frequent use of a tool, it comes with a lot of function parameters, the article
1. dump redo description
For the Dump redo log example, the [ID 1031381.6] documentation on MOS is described in detail. Dump has two methods:
(1) run the 'alter session' command dumpredo header.
(2) run the 'alter system dump logfile' command to
1. Create the test table SQLgt; createtabledump (idnumber, namevarchar (20); Tablecreated. SQLgt; insertintodumpvalues (1000,
1. create a test table SQLgt; create Table dump (id number, name varchar (20); table created. SQLgt; insert into dump
Have you ever accidentally deleted a database table or damaged the disk where the database is stored? If you encounter this situation, I believe you will feel very frustrated, because the results of your hard work for a few weeks may be overwhelmed.
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