Does oracle’s index load to automatically load into memory?
Indexes take up a hard disk and are saved in a tablespace. You can specify the tablespace, if not, it will be saved to the default tablespace.
Retrieving an index is reading the index information in the tablespace, which of course takes up a small amount of memory, but you don’t have to read it all out.
In oracle man-made database stored in which folder
In oracle man-made database stored in which folder
According to the database file, the default is oracle/oradata directory
But generally customized to modify the tablespace data file storage path, it depends on your tablespace data file
How to view the address of oracle datafile
1, the execution: selectnamefromv$datafile query tablespace datafile specific location
Results of the set of columns:
NAME
D:\APP\AIRUCHEN\ORADATA\ORCL\ USERS01.DBF
2, the implementation of: Select * FROMDBA_DATA_FILES; query tablespace data files in the specific location and file name, tablespace name, etc., than the last full.
Results set:
FILE_NAME (data file name) TABLESPACE_NAME (tablespace name) other table header ………………………..
D:\APP\AIRUCHEN\ORADATA\ORCL\USERS01.DBF SYSTEM other data ………………………
Extended information:
Common commands for oracle database under Linux
Executed under Oracle user:
$sqlplussystem/manager@file.sql执行sql脚本文件
$sqlplussystem/ manager to log in to sqlplus, using the system user
$sqlplus/nolog to start sqlplus without connecting to the database, will be used to start the data
$lsnrctlstatus/stop/startoracle listener listener status view /stop/start
$impsystem/managerfile=/tmp/expfile.dmplog=/tmp/implogfile.logignore=yfromuser=expusertouser=impuser user schema table data import, here only used a few parameters. Here only use a few parameters, there are a lot of unused parameters, if you do not specify the value, use the default value.