MySQL的InnoDB引擎鎖的原理實驗MySQL的INNODB引擎鎖的原理是怎樣的,來做個實驗。mysql> SELECT VERSION();+-----------+| VERSION() |+-----------+| 5.5.20 |+-----------+1 row in set (0.00 sec)CREATE TABLE test ( a INT(5), b VARCHAR(10), c VARCHAR(10)
使用RMAN將檔案系統遷移到ASM1,全備資料庫PRODrun{allocate channel c1 device type disk;allocate channel c2 device type disk;backup tag 'SH_DB' as compressed backupset format ‘/home/Oracle/full_%U.bak' databaseinclude current controlfile;backup tag 'SH_ARCH'
MySQL 源碼scr.rpm安裝的一點注意事項rpm安裝包通常為二進位包(Binary)以及原始碼包(Source)兩種形式。在使用源碼方式安裝MySQL的時候,官方網站上下載的源碼包通常為scr.rpm格式,而不是直接的tar包,對此,需要先使用rpm命令先安裝源碼後在進行編譯安裝,本文是對該方式的描述。1、下載源碼包 http://mirrors.sohu.com/mysql/MySQL-5.6/
恢複控制檔案後如何避免resetlogs開啟資料庫?恢複控制檔案後,資料庫使用resetlogs方式開啟,線上日誌的序列被重設。SYS@practice >select group#,sequence#,archived,status,first_change#,next_change# from v$log; GROUP# SEQUENCE# ARC STATUS
Real-Time SQL Monitoring using DBMS_SQLTUNE,dbmssqltuneReal-Time SQL Monitoring reports are available from three locations:Enterprise Manager - Click the "Performance" tab, then the "SQL Monitoring" link at the bottom-right of
Oracle建立使用者以及備份還原資料庫操作,oracle資料庫-- Create the user create user XX identified by "" default tablespace USERS temporary tablespace TEMP profile DEFAULT password expire;-- Grant/Revoke role privileges grant connect to XX<span