dba for dummies

| UTF8 | =c/dgadmin : dgadmin=CTc/dgadmin template1 | dgadmin | UTF8 | =c/dgadmin : dgadmin=CTc/dgadmin tpch | dgadmin | UTF8 | tpch_1g | dgadmin | UTF8 | (5 rows)You can also use the following SQL to query for more detailed information:postgres=# select * from Pg_database; Datname | DATDBA | encoding | Datistemplate | Datallowconn | Datconnlimit | datlastsysoid | Datfrozenxid | Dattables

(2) Save Ipta Bles configuration Iptables-save >/etc/sysconfig/iptables #serverb: (1) Install software [[emailprotected] other]# rpm NGINX-1.8.0-1.EL7.NGX.X86_64.RPM (2) View software framework [[emailprotected] other]# rpm-ql nginx/etc/logrotate.d/nginx/etc/ Nginx/etc/nginx/conf.d/etc/nginx/conf.d/default.conf/etc/nginx/conf.d/example_ssl.conf/etc/nginx/fastcgi_ Params/etc/nginx/koi-utf/etc/nginx/koi-win/etc/nginx/mime.types/etc/nginx/nginx.conf/etc/nginx/scgi_params/etc /nginx/uwsgi_params/et

; Fastcgi_param Script_filename/usr/share/nginx/Yeliangcheng.com$fastcgi_script_name; Include Fastcgi_params; }}serverc{#迁移程序--Install the same package PHP PHP-mysql/mnt/item/nginx/epel/spawn-fcgi-1.6.3-5. el7.x86_64.rpm #启动服务并设置开机自启 systemctl start Spawn-fcgi; /sbin/chkconfig spawn-fcgi on #php相关文件Tar-jxf/usr/share/nginx/bbs.com/bbs.Tar. bz2}===================================================================================#测试serverb {#关闭数据库服务 systemctl stop mariadb #关闭spawn-f

variable that is only valid for code snippets within a function locally a=1title: Bash xxxx.SHInput-T5represents a triangle with 5 lines of paint-L7represents a draw slash 7 lines #!/bin/Bashtriangle () { forXinch$(seq 1$1) Do forYinch$(seq 1$(($1-$x))) Do Echo-N" " Done forZinch$(seq 1$((2* $x-1))) Do Echo-N"" DoneEcho Done}line () { forIinch$(seq 1$1) Do forXinch$(seq 1$i) Do Echo-N" " DoneEcho-

filesystem name (e.g. ext3) also lists-I: No hard disk capacity, and the number of inode to display du [-ahskm] file \ Directory name selection and parameters:-A: List all files and directory capacity, because the default is only the number of files in the directory underground-H: A more readable capacity format (g/M) Display-S: Lists the total, not the size of each directory-S: Do not include totals under sub-directories-K: List capacity display in Kbytes-m: Display du with MBytes listing capa

me comfort a lot, in addition to the child his father did a stupid thing to make me angry, all smooth. Well, this week's main content is probably summed up:1Introduction to Simple Linux commands2. Online Help for Linux systems3simple installation of Linux systems4management of users and Groups5. Management of files and directories6. Introduction to File Systems7. Compression \ Decompression and Packaging8Introduction to Remote control commands 0 Basic Learning Cloud computing and Big Data

1. Single-arm routing Switch:switch (config) #vlanTenSwitch (config-vlan) #vlan -Switch (config-VLAN) #exitSwitch (config) #intf0/1Switch (config-if) #switch Access VLANTenSwitch (config-if)#intf0/2Switch (config-if) #switch Access VLAN -Switch (config-if)#intf0/3Switch (config-if) #switch mode Trunkrouter:router (config) #intf0/0Router (config-if) #no shutdownrouter (config-if)#intf0/0.1Router (config-SUBIF) #encapsulation dot1qTenRouter (config-SUBIF) #ip Add10.0.0.1 255.0.0.0Router (config-SU

the growth of Blue-Chase DBA (3): antique operation, data import and export become a problemStatement ***************************************An individual's growth record on Oracle's path, with blue self-metaphor, to share growing emotions, horizons and technological changes and growth. Sensitive information is replaced in English, and will not disclose any corporate secrets, purely for technology sharing.Creation is inspired by self-reflection and re

Unix/linux topic: 1. How to view host CPU, memory, IP and disk space? cat /proc/cpuinfocat /proc/meminfoifconfig –afdisk–l2. What are your common process management and host Performance view commands?Ps–efIostat3. Set up DBA and reorganize user Oracle, default shell is bash.4. How to view the user Oracle's login history and command operation history?5, write crontab, let script/opt/test.sh at 8:00 every Sunday night to execute6. How to find all files

Tags: class tar get HTTP strong cSQL queries the database, you can take a series of ways to improve the speed and performance of queries. For example, use case instead of update, using temporary tables and batch updates, and so on. This article introduces 7 ways to improve the query speed, please refer to the reader.When SQL queries the database, proper adherence to some principles can make the job easier, and this article lists 7 principles that can be used flexibly to help you improve your SQL

Recently, a large number of new database management software packages have moved into the market. Oracle's just-released Database 11 GB promises to provide DBAs with new features beyond the DBA's understanding scope. Microsoft's SQL Server 2008 will be released in February, becoming the successor of SQL Server 2005; informix launched a new Cheetah version, which IBM hopes to regain its market share. FileMaker's 9th version of software with the same name, the vendor said the product was ready for

In a Microsoft SQL Server 2008 system, the database administrator (DB administration, referred to as DBA) is the most important role. The goal of the DBA is to ensure that the Microsoft SQL Server 2008 System runs normally and efficiently. The work of the DBA is also the busiest, both for performance tuning and for disaster recovery, without

Label:Original: SQL Server DBA work detailsIn a Microsoft SQL Server 2008 system, the database administrator, or DBA, is the most important role in the administration. The DBA's goal is to ensure that the Microsoft SQL Server 2008 system runs properly and efficiently. The DBA's work is also the busiest job, whether it's performance tuning or disaster recovery, without the DBA's support.In general, as a

ORACLE management-view users with DBA roles 1. view All users: select * from dba_users; select * from all_users; select * from user_users; 2. view system permissions of users or roles (system permissions assigned to users or roles): select * from dba_sys_privs; select * from user_sys_privs; SQL> select * from user_sys_privs; username privilege adm ---------------------------- permission --- zszq unlimited tablespace NO3. view the permissions of a role

affected, 1 warning (0.00 sec)[emailprotected] 07:0844->insert into student values(0004,‘脉动‘,‘男‘,‘29‘,‘computer application‘);Query OK, 1 row affected, 2 warnings (0.00 sec)[emailprotected] 07:0852->insert into student values(0005,‘woshishei‘,‘女‘,‘26‘,‘计算机科学与技术‘);Query OK, 1 row affected, 2 warnings (0.00 sec)[emailprotected] 07:0944->insert into student values(0006,‘莹莹‘,‘女‘,‘26‘,‘护士‘);Query OK, 1 row affected, 1 warning (0.00 sec)2. Curriculum Insert Data[emailprotected] 07:1221->insert into c

Differences between SYS and SYSTEM, DBA and SYSDBA: SYS and SYSTEM: 1. the role of sys is sysdba system and sysoper 2. sys has the create database permission. system does not have this permission. 3. sys can create and modify the base table and view of the data dictionary. system cannot create the base table and view of the data dictionary. it cannot be modified. 4. sys and system both have dba permissions.

Tools used to manage Oracle databases include: http: // localhost: 1158/emhttp: // localhost: 5560/isqlplus. The iSQLPLus Service must be started first.> isqlplusctl start, but when I enter http: // when localhost: 5560/isqlplus/DBA, the Login Dialog Box appears, but the login fails. No matter which account is entered, the solution is recorded as follows. This is an operation in Windows: for my own situation, I first need to enter the Oracle directory

Many developers want to be a DBA, and a lot of people start by positioning themselves as a dba,dba. What kind of knowledge and skills do you need to know? Here's myWhile doing DBA work and interviewing DBAs, some of the 30 DBA issues that have been collated, as well as the s

Tags: database backup database management database files Oracle Serverfor a qualified DBA (database Administrator, DB Administrator), it is not sufficient to understand the SQL statements in light. DBAs typically work at the intersection of databases, servers, operators, and developers, so a qualified DBA needs to understand every aspect of it, and can have the ability to debug performance, hardware, and so

Tags: dbaDatabase administrator, in English, is DB Administrator, referred to as DBA. This position means a different meaning to different people. A small software development studio is more broadly responsible than a large company with a highly detailed division of labor. A company, whether it is developing its own application software or buying third-party applications, as long as it involves a database (how many applications that do not involve the