entry level oracle database administrator salary

Database administrator:Different permissions for SYS and system:SYS: the base tables and views of all Oracle data dictionaries are stored in the SYS user, which is critical to the runtime of Oracle and is determined by the databaseown maintenance, no user can manually change, sys user has DBA, SYSDBA, Sysoper role or permissions, is the highest

Mysql entry-level series: obtain and install the samp_db sample database distribution package to set and access the file of the samp_db sample database. you can obtain the following URL: Http://www.mysql.com/Contrib/Examples/ Retrieve the distribution package file samp_db. t a r. g z, enter the directory where you

As an Oracle administrator, you will learn database management tools from the beginning. The following describes some basic concepts of database management tools for Oracle administrators. 1. What is Oracle Enterprise Manager.

Oracle Database AdministratorI have already introduced daily, weekly, and monthly jobs for you, this section describes the monthly responsibilities and daily management of Oracle Database administrators, the weekly responsibilities of Oracle

Oracle Database AdministratorThe workload is very large, from the daily responsibilities, there is a week of work, as well as the monthly work, we have already introduced you to explain the daily responsibilities of the Oracle database administrator, next we will share with

The computer is WIN10 64 bit, the database is Oracle 11g, log in today　　When displayed: Ora-01031:insufficient privileges, insufficient permissions.Referring to this method, my local Users and groups have ORA_DBA groups, and the group also has a system login user, and the database is also installed to use for a period of time, today only display the hint. However

database as sysdba/sysoper, they are automatically granted the management permissions of sysdba/sysoper.2) Password files: Password File Authentication-- This method is used in the following cases:When you manage a remote database, there is no secure network connection, such as TCP/IP and DECnet.You do not want to use OS authentication when managing local databases.-- Procedure:A. Use ORAPWD to create a pa

is made, it's not affected by the call. The change was only seen in the runs of the job.In general, you should not alter a job, which is automatically created for the database. Jobs, were created by the database has the column SYSTEM set to in TRUE job views. The attributes of a job is available in the views *_SCHEDULER_JOBS .It is perfectly valid for running jobs to alter their own job attributes using SE

2015-5-11Help the brother write a specialized course of homework. Write this system for the first time.Target :0) A client with a user interface1) Registration, login function2) After logging in, can increase, delete, change, check the corresponding database dataAfter login the interface probably looks like this (seniors version):Let's record the traditional C/S model I understand. (Temporary superficial understanding, not necessarily completely accur

NLS_CHARACTERSET corresponds to the current database character set. The database character set is used by default. In this tutorial, the default ZHS16GBK character set is used during installation, that is, Chinese characters occupy 2 bytes, and English occupies 1 byte. The NLS_NCHAR_CHARACTERSET corresponds to the secondary character set of the nchar or nvarchar2 type, that is, the AL16UTF16 character set.

Use of Oracle Database [Entry edition, including common SQL statements]Enter sqlplus in the command promptOr directly open sqlplusScott/tiger (User Name/password) {or enter the user name (scott)-press ENTER-enter the password (tiger )}1. sqlplusA client tool provided by Orcale, which can be used to send some SQLCommunicate with the databaseSqlplus commandSqlplus

single-row function can be nested for unlimited nesting layers. Grouping functions can be nested at most two layers. The execution sequence of nested functions is from inner to outer. Single Row such as select empno, lpad (initcap (trim (ename), 10, '') Name, job, sal from emp; Multiple rows, such as select max (avg (sal) from emp group by deptno; -- in fact, it makes no sense to use the grouping function here. Note: functions provided at the database