Oracle

Select the most efficient sequential table name (only valid rule-based optimizations)The Oracle parser handles the table name from right-to-left from the FROM clause to the order, so the From is written in the final table (the underlying table,

Differences and linkages between functions and stored procedures in Oracle "reproduced Bamboo Lek Pinellia"In Oracle, functions and stored procedures are often used, and there are many similarities in their syntax, but they also have their own

/*The flashbackup of 11g is divided into several kinds, which are different in use.A.flashback database Flashback, the simple idea is to flash the database back to a previous point in time,The earliest SCN that can be recovered depends on the

The online redo log of the Oracle database contains an operational record of all the data in the database, and we can do a lot of things with redo logs, such as log mining.Sometimes, for a variety of reasons, our online log was mistakenly deleted or

http://blog.csdn.net/jojo52013145/article/details/7470812During the development of a database, it is common to encounter problems in which the packages, stored procedures, functions cannot be compiled or compiled, and PL/SQL cannot respond.

Resolves an oracle EBS out-of-report non-replicating issue suddenly think of a long time ago colleagues mentioned that EBS made a report cannot be copied.where the upper-right corner font size can be set:Needless to say, let's solve the problem that

--Check the foreign key table Nc56.csci there is no corresponding primary key table SELECT A.owner, a.table_name primary_table_name, a.constraint_name Primary_table_key_name, B.owner,

The company currently uses a different database for different business systems, involving Oracle, MySQL, and SQL Server. While some of the core business is in MySQL, it is often important to insert data from Oracle and SQL Server into MySQL.This

Today optimizing a piece of SQL, the original script is roughly as follows:Select a. field n from Tab_a awherea. Field 2 is not null;A. Field 2 is indexed, but the query is very slow.So the following changes were made:Select a. field N from Tab_a

################## Database Connection Configuration ###################Oracle#hibernate. Connection.driverclass=oracle.jdbc.driver.oracledriver#hibernate. Dialect=org.hibernate.dialect.oracle9dialect#hibernate. Connection.url=jdbc:oracle:thin:@192.1

--Reference variable--open Oracle output--set serveroutput ondeclare -Define reference variable, query and print 1232 name and salary --pename varchar2 (20);-- These 2 sentences and the following 2 sentence effect consistent --psal number;

A statement written in the workSELECT * FROM Bt_holiday whereTo_char (setting_date, ' YYYY ') =substr (' 2015-03-00 ', 1,4) andTo_char (setting_date, ' MM ') =substr (' 2015-03-00 ', 6, (InStr (' 2015-03-00 ', '-') ')-(InStr (' 2015-03-00 ', '-', 1)

2.3 How to solve the problem of exporting CLOB and BLOB type data errorWhen a table field contains CLOB and BLOB type data, using PL/SQL developer to export an error that reports the stream read error, the export operation terminates, stating that

Two days ago in a friend QQ group raised a question. Background For example, the following:After continuing to ask, there are replies such as the following:1. There is no problem with the other server connection.2, from the client can telnetserver 15

I used to use the direct command. Brew Cask install Java, install the following version of Java: ? ~ $ Ls-lh ' which Java ' lrwxr-xr-x 1 root wheel 74B 19:07/usr/bin/java Works/javavm.framework/versions/current/commands/java? ~ $

1. Let's start with a fully preparedrman> backup database ; starting backup at 2015/07/09 13:40:47allocated channel: ora_disk_1channel  ora_disk_1: sid=28 device type=diskchannel ora_disk_1: starting full 

Input table name learning for stored procedures in Oracle. Input table name in Oracle stored procedure: 1. dynamically clear data from the tableCreate or replace procedure p_deletetable (I _tableName in varchar2) as -- Define the SQL statement

Oracle 11g R2 for Win7 flagship edition (64-bit) Installation Steps, 11gwin7 Databases have many versions. Which one should I learn? Everything is rational. Although there are many database versions, the essence is the same. The changes are just

How to connect to and operate Oracle databases using JDBC Learn before. NET, ODBC was used to connect to the database, while JDBC is usually used in Java to connect to the database. Here we take the oracle database as an example to briefly summarize

TOAD and PLSQL default date display, rowid display, TNSNAME modification, plsqlrowid First, let's talk about the problem to be solved: Selectrowid, acct_id, state_date from acct; After modification, 1) the SQL statement specifies the rowid,