Oracle中exists与in的效率探讨 ( 转存)
Oracle中exists与in的效率探讨2007年10月20日 星期六 0:51in 与 exist 的语法比较: select × from 数据表 t where t.x in (...)  ...
So many TIME_WAIT connection
problem:So many TIME_WAIT connection in server. SocketsUsageWarning: Active: 2570; TIME_WAIT: 2507; Usage: 97%tcp 0  ...
Recover MySQL root Password
Recover MySQL root Passwordby Vivek Gite on April 18, 2006 · 190 commentsYou can recover MySQL database server password with following five easy steps.Step # 1: Stop the MySQL server process....
查看数据库字符集
SQL> SELECT NAME,VALUE$ FROM SYS.PROPS$ WHERE NAME='NLS_CHARACTERSET';NAME------------------------------VALUE$--------------------------------------------------------------------------------NL...
Shareplex 7 activation failed due to horizontal partioning support limitation
Below are the steps to fix the issue:[oracle@db servers config]$ more /xxxxx/vardir_30001/temp/xxxxx.cfg432: TEST.TESTACCOUNT &nb...
创建永久性本地SCSI设备名称
创建永久性本地SCSI设备名称[root@racdb1 tmp]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 5.5(Tikanga)[root@racdb1 tmp]# [root@racdb1 rules.d]mkdir -p/etc/udev/scri...
3岁-4岁幼儿情感有什么特点
3岁-4岁幼儿情感有什么特点孩子多数时间极为活泼愉快,容易兴奋。但有时又大哭大闹,忽而会破啼而笑,真是变化多端。1、易冲动孩子常因环境的变化,或一点点小事而冲动起来。当幼儿冲动时,完全不能控制自己,...
ORA-15071: ASM disk "VOL_DATA2" is already being dropped
SQL> alter diskgroup PQAWEB_DATA1 drop disk 'VOL_DATA1' FORCE ; alter diskgroup PQAWEB_DATA1 drop disk 'VOL_DATA1' FORCE*ERROR at line 1:ORA-15032: not all alterations performedORA-15071: ASM disk "VO...
创建永久性本地SCSI设备名称
Normal 0 7.8 pt 0 2 false false false EN-US ZH-CN X-NONE</w:LidThemeComplexScript. ...
mysql backup and restore
mysqldump --single-transaction --flush-logs --all-databases > backup_sunday_1_PM.sql
Enalbe mail feature for oracle DB.(oracle10G)
a. This step is used to config the email server to send alert email. 1. Run script. "@?/rdbms/admin/utlmail.sql" at sqlplus prompt. 2. Run script. "@?/rdbms/admin/p...
Change the port from 3306 to 8008 for mysql.
The mysql default port is 3306. I want to change the port to 8008. After /etc/my.cnf changed, the mysql can't be started any more. The error message as following.101210 03:47:43 mysqld_safe mysqld fro...
ERROR 1045 (28000): Access denied for user 'root'@'localhost'
错误提示:# mysql -uroot -pEnter password:ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)解决方法:1方法一:# /etc/init.d/mysql stop# mysqld_safe --user=mysql --skip...
ORA-00600: internal error
Normal 0 7.8 pt 0 2 false false false EN-US ZH-CN X-NONE</w:LidThemeComplexScript. ...
TNS-12520 连接错误处理(转)
TNS-12520 TNS-12519 连接错误处理今天巡检客户数据库时,发现有个taf自动offline,手工启动后,再过一段时间又自动offlineITPUB个人空间%jcun3Cd*L$ crs_stat -tITPUB个人空间V_Qf^ Y...
物业管理费2010-7-1 --- 2010-12-31 公摊水费止2010-8月
关于ORA-00376错误的恢复案例(转)
今天开始磁盘空间100%,删完数据后,查询表遇到ORA-00376错误:SQL> select count(*) from tab_test;ORA0-00376: "file '/data1/oradata/e_data1.dbf' cannot be read at this time"重启数据库没有问题,数据...
My sql 远程访问 授权
1、改表法 可能是你的帐号不允许从远程登陆,只能在localhost。这个时候只要在localhost的那台电脑,登入mysql后,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,从"localhost"改称"%" mysql -u root -pm...
(转)ORA-01502 state unusable错误成因和解决方法(二)
SQL> create table t(a number);Table created.现在,我们建立一个唯一索引来看看:SQL> create unique index idx_t on t(a);Index created.SQL> select index_name,index_type,tablespace_name,table_type,stat...
How to check site certification.
root # openssl s_client -connect xxx.xxxx.com:443For more details please refer to http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services