Oracle

Oracle Study case--aix installing RAC error (ROOTPRE)　Oracle 10g for AIX 5309 rootpre execution times the following error:#./rootpre.sh　Required file./pw-syscall32 is missing.650) this.width=650; "src="

Oracle's fast way to import Excel data uses the Plsql Developer tool, which is the most common tool used by Oracle's most famous DBA.In cases where a single file is small (less than 100000 lines), and the destination table structure already

The current time is noon. You want to recover the USERS tablespaceFrom a failure this occurred at 11:50 a.m. You discover thatThe only member of Unarchived Redo log group containing informationFrom 11:40 a.m. onwards is corrupt.With reference to

With this method, only a few necessary parameters can be passed to test the remote connection of the database, and the connection returns true successfully, and the failure returns false. Description: The first parameter indicates that you are a

A couple of systems have finally succeeded with CentOS installation Oralce, and here I've also consulted a lot of information on the web as well as Oracle's official documentation1, download Oracle, I choose here is the 11GR2 version, download down

lower--Convert to lowercaseupper--Convert to uppercaseinitcap--First Letter Capitalconcat--Connection Characterssubstr--Intercept characterslength/length--Get string Length (bytes length)instr--where the specified character is locatedlpad/rpad--Left/

The functions previously described in Oracle are string processing, date functions, mathematical functions, conversion functions, and so on, and a class of functions are general functions. Mainly: NVL,NVL2,NULLIF,COALESCE, these functions can be

GROUP BY rollup (A, B)=Group by A, b+GROUP by a+GROUP BY NULL1Sql> SelectDeptno,job,sum(SAL)2 2 fromEMP3 3 Group byRollup (deptno,job);4 5DEPTNO JOBSUM(SAL)6 ------ --------- ----------7 -8 -9

Command:Sqlldr Userid=[username]/[password]@[database] Control=[filepath]Username User NamePassword PasswordDatabase DB InstanceFilePath the physical path of the CTL

Typically, you delete or stop a job by using SQL.Remove Job:removeStop Job:brokenFirst throughSELECT * from User_jobs;Find the ID of the job, and then call theDbms_job.broken orDbms_job.remove for removal and stop. SQL is as follows.To remove a job

round--Rounding functiontrunc--truncation functionmod--to find the remainder functionRound and trunc can manipulate dates in addition to manipulating numbers.Demo1Sql> Select round(45.926,2),round(45.926,1),round(45.926,0),round(45.926),round(45.926,

You find, the execution time of reports in your DatawarehouseApplication is significantly high. You suspect the lack of indexes toBeing the reason for the degradation in performance. which advisory CompOnent would you refer to, in order to determine

Recently there is time to learn Oracle, the process of learning to organize out, the long learning path, now just start.1. #su-oracle2. Start monitoring$ lsnrctl Start3. Start EM$ emctl Start Dbconsolehttp://192.168.88.139:1158/em/4. Start Isql*plus$

Fifth chapter grouping functions1. What is a grouping function?A grouping function acts on a set of data and returns a value to a set of data.Type: AVGCOUNTMAXMINSTDDEVSUM2.AVG (average) and SUM (total) functions:You can use the AVG and SUM

The data in the table does not actually delete the data after it has been deleted, but instead it hits a delete tag that can be recovered only if it has not been overwritten. The experimental steps are as follows:[Email protected]>create table

The backup-based Rman Duplicate command to create the standby databasePrerequisites: To ensure that the original database backup, archiving for the standby end is fully visible,This assumes that the original library and the target data file, log

1.cmd Sqlplus/nolog;2.conn Sys/as sysdba;3.Create user query identified by query;//4.alter user Query Account unlock;//unlocked5.alter user query identified by tiger;//change password6.grant Connect,resource to query;//permissions7.select t.* from

Requirements: Migrate Oracle database data files, redo files, control files to other local directories.1. Test environment:Operating system Redhat 6.3, database Oracle 11.2.0.1.0[Email protected] ~]# uname-Alinux Dbtest12.6. +-279. el6.x86_64 #1SMP

Practice: oracletimesten11.2.2.7.0oncentos6.5 Entry level, but the steps are more detailed, there is no theory, can be used as an entry manual.   **************************************** * ******************************** 1. create a user ***********

How to solve the problem of migrating from non-archive mode to archive mode in Oracle Database I found several problems during the oracle archive test today. I will record them here for your suggestions and help. [oracle@localhost ~]$ sqlplus / as