Oracle

Reprint: http://www.idevelopment.info/data/Oracle/DBA_tips/Advanced_Queuing/AQ_2.shtmlOverview This article provides a brief overview on configuring and Using Oracle's advanced Queuing features using PL/SQL. This would demonstrate the

First, the common date data format1. Get the last digit of the year, two-bit, three-bit, four-bitSelect To_char (sysdate, ' Y ') from dual; --Get the last one of the yearSelect To_char (sysdate, ' YY ') from dual; --Get the last two digits of the

Recently, in the process of learning, found a very interesting function, it can achieve the concatenation of the column values. Let's take a look at its specific usage.Usage:The official documentation for its role is explained below:For a specified

Http://www.cnblogs.com/yugen/archive/2010/07/25/1784763.htmlBasic syntax and examples:EXP: There are three main ways (full, user, table)1. Complete:EXP System/manager buffer=64000 file=c:\full. DMP full=yIf you want to perform a full export, you

1.single-row FunctionsNVLNVL2NullifCoalesceCaseDECODE2.Character functionsLOWER (column|expression)--lowercaseUPPER (column|expression)--uppercaseInitcap (column|expression)--Capitalize first letterCONCAT

How Java passes a list to an Oracle stored procedure, as in the following example:An array of PL/SQL is built on the database side.CREATE OR REPLACE TYPE Tables_array as Varray (+) of VARCHAR2 (+);d ROP table Test purge;create table Test ( name

 the 7 - bit Oracle database installed on the Win Oracle client, with Plsql Connection Oracle appears when situation , only user name, password, database fill or select box, there is no "login as" (role) selection box. Solution: 1)

If we encounter the need to take data from the database of other systems for statistical analysis, the suspect chooses to use ORACLE 's ODI tool for the number of votes, but the other side of the database provided by the user does not have any

pagesize: The number of records displayed per page. pagecount: The total number of pages is automatically calculated based on the user-defined pagesize and total records in the table. recordcount: The total number of records in the table.

First, set operation operatorUNION: (unions) returns two sets all records with a duplicate value removedUNION All: (set) returns two sets all records with duplicate values removedINTERSECT: (intersection) returns all records of two sets, repeating

To create an Oracle staging table, you can have two types of temporary tables:Session-level temporal tables temp table at the transaction level. 1) session-level temporary tables because the data in this temporary table is related to your current

CREATE OR REPLACE PROCEDURECampaignprize_range (Campaignidd Number, Prizetypeidd Number, ServerindexVARCHAR2, RETVAL outVARCHAR2) ishashcodedVARCHAR2(8); Prizetypenum Number(6); Prizetypenumold Number(6); PRIZETYPENUMCVARCHAR2(6); Datacount Number(6)

Desktop installation Oracle reported the following error when allocating the SGA:[INS-35172] Target database Memory (XXMB) exceeds the systems available shared memory ({0}MB)At first, it is assumed that the system parameter is insufficient, check

Hibernate when you manipulate the database,When adding operations times Oracle Operation ORA-02289: sequence does not existHibernate description Fileams_reception. seq_idWhen inserting operations on the Apply tableWill go to the database to query

First, the syntax specification:SELECT .... From PIVOT ( aggregate-function () for in ( , ,..., )) as where ..... Use an example to illustrate its usage:SELECT * FROM (select salary, department_id from employee) pivot (sum

1. Resolve cannot backspaceMethod 1:stty Erase ^hUnder Oracle User, add the following statement in the user Environment profile. Bash_profileStty Erase ^hMethod 2: Operate on the SECURECRT toolHook up the options in the diagram;In contrast, choose

 From the network http://blog.chinaunix.net/uid-23622436-id-3184356.htmlreason for Oracle index failureCategory: Oracle1) No query criteria, or the query condition is not indexed2) The boot column is not used on the query condition3) The number of

Method One:At the moment most databases have the need for distributed queries. The following is a brief introduction to how to configure cross-library access in Oracle.Today, for example, there are 2 database servers with 2 databases installed.

Oracle Query Table space usage Select A.tablespace_name "Table space name",Total "Table space size",Free "Table space remaining size",(Total-free) "Tablespace usage Size",Total/(1024 * 1024 * 1024) "Table space Size (G)",Free/(1024 * 1024 * 1024)

Introduction to the use of dual tables in Oracle and the use of oracledual tables Dual is a virtual table used to form the select syntax rule. oracle ensures that there will always be only one record in dual. We can use it to do a lot of things, as