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password: ALTER user SYS identified by Ninestar123;Oracle failure, error file deletion: Alter DATABASE datafile '/u01/app/oracle/oradata/g6.ora ' offlinedrop; ALTER DATABASE datafile '/u01/app/oracle/oradata/g6a02.ora ' offline drop;Query database for lock table: SELECT * FROM Fw_lockresource R where R.isfree = 0;Delete Oracle User: Drop user ees2 cascade;Delete Table space: Drop tablespace ees2 including contents and datafiles cascade constraint;Modify user default tablespace: Alter users ees2

;/tmp/ Myserver.1.sql3. Analog failureProcess crashes[Email protected] ~]# killall mysqld mysqld_safeAll library files are missing[Email protected] ~]# rm-rf/var/lib/mysql/*4. Restoring a backupStart the service first[Email protected] ~]# systemctl start mariadbTo view the library files that have been built for repair[Email protected] ~]# ls/var/lib/mysql/aria_log.00000001 ibdata1 ib_logfile1 mysql.sock testAria_log_control IB_LOGFILE0 MySQL Performance_schemaBecause the process of

[Oracle] export and import of OCR backup and recovery Back up and restore OCR using exported import: Before adjusting the cluster, for example, adding or deleting nodes, you should back up OCR once. You can use export to back up to the specified file. Lab environment: OS: OEL5.6 RAC: 10.2.0.1.0 (1) Disable CRS for all nodes Node 1: [Root @ rac1 crsd] # crsctl stop crs Stopping resources. Successfully stoppe

): "mysqlrootpwdif[" $mysqlrootpwd "= "" ];thenmysqlrootpwd= "123456" fiecho "===========================" echo "Mysqlrootpassword: $mysqlrootpwd" echo "======================== = = = "#which mysqlnbSp versiondoyouwanttoinstall?echo "===========================" isinstallmysql57= "n" echo "installmysql5.7.20,please Inputy "read-p" (pleaseinputy,n): " isinstallmysql57case "$isinstallmysql" iny| y| yes| yes|yes|yes|yes| Yes|yes) echo "youwillinstallmysql5.7.20" isinstallmysql57= "Y" ;; *) ech

count=1 2>/dev/null stty-raw stty echo stty $SAVEDSTTY} echo "" E Cho "Press any key to Start...or press CTRL + C to cancel" char= ' Get_char ' # Initialize the installation related conte NT. function Initinstall () {cat/etc/issue uname-a memtotal= ' free-m | grep Mem | awk ' {print $} ' E Cho-e "\ Nand Memory is: ${memtotal} MB" #Set timezone #rm-rf/etc/localtime #ln-S/usr/share/zoneinfo/asia/sh Anghai/etc/localtime #Delete old MySQL program rpm-qa|

1Database ' Hos ' has a consistency error in sysobjects, sysindexes, syscolumns, or systypes, which hinders further CHECKDB processing.DBCC execution is complete. If DBCC outputs an error message, contact your system administrator.DBCC detects a corrupted sysindexes,sysobjects,sysclocms system table that belongs to a serious damage! caused by a power outage, power failure, or forcibly shutting down the host, accidentally unplugging the plug, etc., resulting in a high-speed disk file system dama

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Discusses MySQL backup and recovery mechanisms, and how to maintain data tables, including the two most important types of tables: MyISAM and Innodb, the version of MySQL designed in this article is 5.0.22. This article describes the use of MySQL with a free backup tool backup