Oracle

This articleArticleThis article mainly introduces the usage of temporary tables in Oracle databases, hoping to help you learn and work. I. Syntax In Oracle, you can create two types of temporary tables: (1) Session-specific temporary tables

I am an absolute newbie for Linux, but today I have a job to set up automatic data backup for an Oracle server installed on Linux. This is probably only one job, only one thing, will certainly be forgotten after a long time, so the entire

Use Database functions to convert the lower case of RMB into the upper case of the invoice: Create or replace function l2u -- converts the lower-case amount to uppercase.(N_lowermoney in number)Return varchar2AsV_lowerstr varchar2 (200); -- lower

1: When performing multi-table join, use the Where statement to minimize the result set of a single table. Use the aggregate function to summarize the result set and associate it with other tables to minimize the data volume of the result set.2:

1. Because oracle 10g is not compatible with win7 for the moment, we can modify some files in the installation software to achieve the installation goal. A) open the path "\ ORACLE10G_client \ stage \ prereq \ client \", find the refhost. xml file,

The counting method of querying a field type from pl/SQL is number and the length is greater than 16 bits is displayed as scientific notation pl/SQL query field type from pl/SQL is number and the length is greater than 16 bits the content is

[Oracle] Data Guard series (1)-three Protection modes Data Guard provides the following three Data Protection modes: 1) Maximum Protection) the "maximum protection" here refers to protecting data from loss to the maximum extent, that is, at least

Oracle GoldenGate series: ora-01031 errors when using Oracle asm api dblogreader today test GoldenGate on your new Oracle ACFS file system, the following error is reported when the extract process is started: 14:58:39 ERROR OGG-00446 Opening ASM

Main Oracle Data Types Overview: The data types supported by various databases are similar to those in standard SQL languages. Type: varchar2: You can set the maximum length of a field when declaring it. After using it, you do not have to consider

Oracle partnered with Hewlett-Packard to launch the first hardware product, database equipment. Oracle CEO Larry Elllison said the product is suitable for high-end, high-performance data warehouse applications.At the Oracle Open World Conference,

Lookup is a common operation in ETL, such as product key-to-proxy key conversion and ID-to-name conversion. In addition to this normal conversion, The lookup transformation component in Informatica can also be used to update slowly changing

1. Oracle downloadNote that Oracle is divided into two files. After downloading, extract the two files to the same directory. In the path name, it is best not to show Chinese characters or irregular characters such as spaces. Official Address: Bytes.

Fault symptom Oracle Database 11g Database common user login prompt ORA-28002: the password will expire within 7 days[11: 01: 00oracle @ dvd db_1] $ sqlplus wang/oracleSQL * Plus: Release 11.2.0.1.0 Production on Fri Nov 16 11:01:23 2012Copyright (c)

After installing Oracle 10g R2 in CentOS 6.3 and restarting it, you will find that Oracle is not started on your own. This is normal because Oracle Installation in Linux does not start on your own, you must set relevant parameters. First, we will

1. after you forget your username and password, the system prompts invalid username and password after you try several Oracle Default usernames and passwords (The table contains the default username and password,UsernamePasswordDescriptionSee

If a lock wait occurs, we may want to know who has locked the table and who has waited.The following statement can be used to query who has locked the table:Copy codeThe Code is as follows:SELECT/* + rule */s. username,Decode (l. type, 'TT', 'table

Write the script. After registering the service, it is tested that ORACLE can be started with RHEL, but it cannot be closed with the system being disabled. Find answers online and find that almost all posts in the setup process are copied from the

1. Create a stored procedure Create or replace procedure test (var_name_1 in type, var_name_2 out type)-- Declare a variable (variable name and variable type)Begin-- Execution body of the stored procedureEnd test;Print the input time informationE. g:

The ORACLE tutorial is: several methods to optimize the design of Oracle database tables. PrefaceMost Oracle Database performance problems are caused by unreasonable Database design. Only a small number of problems are rooted in the unreasonable

Data Guard provides the following three Data protection modes: 1) Maximum Protection)The "maximum protection" here refers to protecting data from loss to the maximum extent, that is, at least one standby and primary are synchronized in real time,