Oracle

1, query Oracle Server language, geography and character set SELECT * from Nls_database_paameters; The results of the query are shown below Nls_language represents "language", nls_territory means "geographical", Nls_charactset

One, with a null value of the arrangement: In the previous "Oracle Development Analysis Function (Rank, Dense_rank, Row_number)" article, we have learned how to arrange for a batch of records, grouped. What if the sorted data contains null values?

This is a problem that we might encounter in our usual development, is to determine whether a column is all made up of numbers, and we all know that Oracle does not provide us with such a ready-made function, and based on my experience I have summed

The Oracle tutorial you are looking at is: Oracle initialization parameter settings. ALTER DATABASE DATAFILED:\ORANT\DATABASE\USER1ORCL. ORA RESIZE 1000M; CREATE tablespace index_data datafiled:\orant\database\index_data SIZE 500M; ALTER DATABASE

The Oracle tutorial you are looking at is: Oracle Database Security Policy Analysis (i). Database security issues have been the nightmare of database administrators, the loss of database data and the intrusion of databases by illegal users makes the

1. Get System Current TimeSQL Server 2005: Select GETDATE () Oracle: Select Sysdate from dual 2. Get Year dateSQL Server 2005: Copy Code code as follows: Select year (GETDATE ())--2011 Select Month (getdate ())--3 Select Day (getdate ()

I. Managing Users and Securityvarious objects in DB are organized and managed in a user (scenario) manner Select distinct object_type from dba_objects; Schema object, schema----> user.objects (an object under a user) Before you

The Oracle tutorial you are looking at is: Oracle Common error diagnosis. This type of error in Oracle is described in detail in the Oralce documentation, but the reasons and measures are not detailed, and this article focuses on how to resolve such

The Oracle tutorial being looked at is Oracle's query that intersects two data tables. Oracle relational database management system is a popular relational database in the world, it is an extremely powerful, flexible and complex system, it is said

$conn =ocilogon (" username ", " password ", "( Description= (address= (PROTOCOL =tcp) (Host=ip ) (PORT = 1521)) (Connect_data = (sid=lcx )) "); //$sql = "SELECT * from All_tab_columns where table_name= ' member '";//table Structure $sql = "Select

The Oracle tutorial you are looking at is the renaming of the foreign key in the Oracle system table. The foreign key of the table in Oracle is a means to guarantee the referential integrity of the system, while referential integrity refers to the

Simply put, there are roughly 4 ways to call random numbers via Dbms_random packets: 1, Dbms_random.normal This function, without parameters, returns a number type of normal distribution, so the random numbers are basically between 1 and 1.A

Recently because of the unit database hard disk space, finishing the time to check a lot of articles, also carried out a test, sorted out some experience for everyone's reference. First, see an article on the internet, how to shrink undo table space,

The example in this article describes how the Oracle deletes the deadlock process. Share to everyone for your reference. Specifically as follows: Step 1: Use the following SQL to view the list of processes to determine which table is locked

1, USERENV (OPTION)returns the current session information.Option= ' Isdba ' is true if it is currently a DBA role, or false.option= ' LANGUAGE ' returns the character set of the database.Option= ' SESSIONID ' is the current session

--Note: This article only installed Oracle, and did not build a library One: Install a READHAT4 system in the virtual machine Two: With IP After the following IP: Third: Build user group, user Note: Oracle users should have the same UID.

There are a variety of Oracle functions, one of which is the system variable function, which introduces three of the most common system variable functions. Oracle System Variable functions: 1) sysdate The function returns the current date and

First we unpack. After decompression we will find a more than a folder, he is: Disk1, into the Disk1. Then perform the installation: $./runinstaller Execute script #/u01/app/oracle/10.2.0/db_1/root.shRunning Oracle 10g

The Oracle tutorial you are looking at is: Oracle capture problem SQL resolves CPU transition consumption. This paper attempts to provide a diagnostic method for common CPU consumption problems through a case of adjustment in the actual business

Oracle processes and Functions I'm sure you all know better, so here's a detailed description of the difference between the Oracle process and the function, so you can have a deeper understanding of Oracle processes and functions. Oracle procedures