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One: Multitenant Architecture (12.1.0.1)Multi-tenant architecture is the new heavyweight feature of Oracle 12c (12.1), built-in multi-tenancy (multi-tenancy), a container database (container) that can hold multiple pluggable Databases, Each pluggable database is independent of the other pluggable database.For external applications and developers, pluggable databases looks like a single database before the normal 12.1 version. The

, the hope from the system construction and the professional quality of engineers to start, to prevent the DBA of this random dangerous operation.But, after all, the management system is "soft", the hope rests on the engineer consciously abide by the system and "self-cultivation" on, and can not guarantee foolproof.The security components provided by Oracle can be used to limit, block, and prevent such rand

650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M00/05/D7/wKiom1mtGVDSusvRAAYGcg97wFw550.png-wh_500x0-wm_ 3-wmp_4-s_2418458466.png "title=" the DBA Training "alt=" Wkiom1mtgvdsusvraaygcg97wfw550.png-wh_50 "/>There is no doubt that today's era has already entered the "Data age", data everywhere, everywhere, is also in an unprecedented way to change our lives. The status of Oracle database

-level recovery with flashback. Things are destined to be together, in front of the unlucky egg rocky, the telephone rang. The phone is from the finance department, meaning that because of the mistake, he changed the financial software to the salary scale of a salary increase of a wrong number, you find that your monthly salary has become million (jokes). In fact, everyone is so expected! It needs you to save his mistakes! Using flashback can also help you solve problems quickly.8. Be a good hab

The following articles mainly introduce the example of Oracle Database DBA interview questions. This article describes the basic mode of Oracle Database DBA interview questions in a one-Answer manner, the following is an introduction to the related interview questions. I hope you will get some benefits. 1. Explain the

PrefaceThis article describes DBA's daily responsibilities in monitoring Oracle databases and how to use shell scripts to perform repeated monitoring. This article first reviews some common DBA Unix Commands and explains how to regularly execute DBA scripts through UNIX cron. The article also introduces eight important scripts to monitor the

This is a sophomore time in the QQ space of an article, I remember that this problem took me the whole day to deal with it, so at that time to feel quite deep, So at that time deliberately recorded the process of this settlement, and today suddenly have the interest to find a few college writing in the space of the article and share with you, in case similar to what happened to me, but also spend a lot of time, the following is the entire contents of the record: Log in today with user Scott log

Previous:Oracle DBA Study Notes-start and close DatabasesNext article: Oracle DBA Study Notes-log files (using logminer to analyze logs) 1Control File Control File Information:The size of the control file is related to the settings when the database is created. (1)Database creation time information (2)Database Name, table space name (3)Related data file,

, memory, and external storage is quite Complex, these factors must be considered. In addition, pl/sql packages, stored procedures, temporary table empty , the table structure itself, all of these will become increasingly complex as they are used to ensure that the database Structural optimization, no garbage, is definitely more complicated than regular vacuum running from cron. Oracle DBA (DB adminstrator

ORACLE11G is a more generic version, trying to install Oracle 12c unfortunately failed, there is no wayThe following is the collation of information 1. Attached to the installation file Http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_database_1of2.zip? authparam=1407205871_4259949f8bacf912168631692563a693Http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_database_2of2.zip? Authparam=1407205876_ec394cc017d1815a8cce7cc

Oracle DBA Study Notes-STARTUP detailed description: Refer to database version: 10.0.2 I. Command Parsing STARTUP options | upgrade_options options is: [FORCE] [RESTRICT] [PFILE = filename] [QUIET] [MOUNT [dbname] | [OPEN [open_options] [dbname] | NOMOUNT], the three stages of NOMOUNT, MOUNT, and OPEN are startup. They cannot exist in the command at the same time. Here, open_options is: READ {ONLY | WRITE [

backup method and policy? What is the network file configuration? 19. Check the recent alert logs to obtain useful information. 20. run several performance analysis reports to see how the system is running recently. 21. Run an RDA report to collect the complete system status report. Well, with this basic information (incomplete), you have a general understanding of the system you are new to. Next, you can analyze it in depth, then we will formulate a set of O M specifications that meet the act

If you do not know the password for the System,sys user in Oracle, you can retrieve it as follows:First, the database is entered as a regular user:Execute the following command in Sql*plus:Sql>connect/as Sysdba (can also be connected in the following way: Sql>connect internal)Sql>alter user sys identified by SYS; (The password for user sys will change to SYS after carriage return)Similarly, you can change the system passwordSql>alter user system ident

connectionsSql>select Count (*) from v$session where status= ' active ' #查看并发连接数–6. To view the number of connections for a specified programSql>select Count (*) from v$session where program= ' jdbc thin client ' #查看jdbc连接oracle的数目–7. View Database Installation Instance (DBA authority)Sql>select * from V$instance–8. View Run Instance NameSql>show parameter instance_name–9. View database nameSql>show parame

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 Su

Tags: Oracle video tutorialOracle DBA Database Senior Engineer Training course is the wind brother alone research and development of the fine combat courses, the road map is mainly to let everyone fast employment, high-paying employment. The course focuses on Oracle company profile, Oracle Database Introduction, why do

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Common Oracle DBA operations Modify language environment Change Chinese environment to English environment Alter session set als_language = 'American '; Change the English environment to a Chinese Environment Alter session set nls_language = 'simplified CHINESE '; Queries the tables owned by the user. Select table_name from user_tables; Query the name and purpose of a data dictionary table in

1. What is Oracle R12.2R12.2 DefinitionArchitectureAdvantages of R12.2Limitations of R12.2What the benefit business users would get from R12.2 2. Difference between R12.1 and R12.2 ArchitectureArchitectural difference between R12.1 and R12.2Advantages and disadvantages of R12.1 and R12.23. What's online patchingConcept of Online PatchingADV and disadvantage of Online pathing cycleLimitations of Online Patching4. Installation of R12.2Installation of R1

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