oracle 12c ocp

The new feature of Oracle 12c paging query is expected in the upcoming oracle 12c release. This is the optimization of paging query. There are many paging query functions in the application. Previously we used rownum for this purpose.For example, to query 1-10 records, the query statement is as follows: www.2cto.com SQ

Create the wm_concat function on Oracle 12C The wm_concat function has been abandoned on Oracle 11gR2 and 12C. At that time, many of our programmers used this function in the program, leading to program errors. To reduce the workload of programmers to modify programs, you can only manually create a wm_concat function t

Step tutorial on installing Oracle 12c Release Database in win10, win1012c Install Oracle 12c Release Database in win10 In general, download and decompress the package and go to the official website. Double-click to start installation. Click OK to skip Select the first database to create a data

1. View Oracle VersionSql> select * from V$version; bannercon_id-------------------------------------------------------------------------------------------------- --oracle Database 12c Enterprise Edition release 12.1.0.2.0-64bit production0pl/sql release 12.1.0.2.0-production0core 12.1.0.2.0production0tns for linux:version 12.1.0.2.0-production0nlsrtl Version 12.

Oracle 12c Turn off statistics collection and enable statistics collection--Turn off statistics Col client_name for A60select client_name,status from Dba_autotask_client; Client_name STATUS------------------------------------------------------- ---------------------Auto Optimizer stats collection Enabledauto space Advisor Enabledsql Tuning Advisor Enabledbegindbms_a

Tags: Shel from show and off with Ted add HelpIn 12c, Oracle introduced the History command, which is much like the history in the Shell, reducing the knock-down of SQL and bringing a lot of convenience.1. View the history HelpSql> HelpHistory-------Stores, lists, executes, edits of the commandsEntered during the current Sql*plus session.Hist[ory] [N {RUN | EDIT | Del[ete]}] | [CLEAR]N is the entry number l

Oracle 12c has a new feature that can archive data in the database, hide infrequently accessed data from the application, and set it to inactive. Of course, it can also be displayed at the session level. This is achieved through the row archival visibility parameter, which can be set to two values, active or all. Active is the data that shows the activity, and all is the data that shows all, including inact

This article for you to share the installation of Oracle 12c [INS-30131] error of the solution, for your reference, the specific content as follows Solution: Step One: Control Panel > All Control Panel Items > Admin tools > Services >server Start Step Two: Control Panel > All Control Panel items > Management tools > Computer Management > System Tools > Shared Folders > Share right-click "Sharing" > N

Enable In-memory FeaturesDatabase version 12.1.0.2 and above, inmemory_size parameter set to appropriate valueSql> SELECT * from V$version;BANNER con_id-------------------------------------------------------------------------------- ----------Oracle Database 12c Enterprise Edition release 12.1.0.2.0-64bit Beta 0Pl/sql Release 12.1.0.2.0-beta 0CORE 12.1.0.2.0 Beta 0TNS for linux:version 12.1.0.2.0-beta 0Nlsr

Use Windows Console (program | run, enter CMD to open). Under command line, enter Sqlplus/nolog, carriage return, the sql> command prompt appears, and then enter the command in the following order:Sql>conn/as SYSDBASql>alter user Scott account unlock;Sql>disconnectSql>conn Scott/tiger;The password is now expired, please enter a new password. Then enter two new defined passwords to enter the password separately to confirm that the Scott account is given a new password. Open SQL Plus and log in wi

Tags: variableroocontainonlyaltered stroracle Create star 1. Default login to cdb Oracle 12c Learning starts off cdbpdb