Oracle

In the Oracle database of some win systems, it is known that Oracle needs to start the service before it is started, but occasionally there are two requirements: 1. Start the Oracle instance service, but do not want to start the database instance

0X01 test Environment Operating system: Window Server 2008 x64 oracle:oracle 11.2.0.1.0 0x02 Oracle Permissions Introduction An Oracle instance is a database, and creating a new database produces a new instance, and an instance runs a process

1. Reasonable sorting of query conditions Oracle uses a bottom-up sequence to parse where writes, and from an optimized performance perspective, it is recommended that the conditions that filter out a large number of record rows be written at the

The Oracle tutorial you are looking at is about backup of Oracle databases. One, meaning: When we use a database, we always want the contents of the database to be reliable and correct, but due to computer system failure (hardware failure, network

This article describes the maximum length that a table name can use in the Oralce database. This length is also the maximum length of the Oracle identifier, which is 30 characters. Small weave today, when an Oracle database table is being built, it

The Oracle tutorial you are looking at is the development of high-performance, dynamic SQL programs based on Oracle. Absrtact: The development of dynamic SQL program is summarized, and some development techniques are given according to the author's

The Oracle tutorial you are looking at is the study of backup and recovery strategies for Oracle databases. The recovery of a missing database file depends to a large extent on the backup strategy used. Based on the flexibility of recovery, this

It's interesting to see a document called "Penetration:from application down to OS (Oracle)" These days, and the general meaning of the document is that if Oracle services are started with an administrator account, you can just have A database

First install the Oracle 10g CD-ROM into the CD-ROM drive, and if it runs automatically, it will typically appear as shown in Figure 1 installation Interface: Figure 1 By clicking Start installation, you can install Oracle 10g, typically checking

In addition, some of the differences they have listed are quite meaningful, some may be due to their own MySQL DBA identity, the understanding of Oracle some deviation, some are dine suspicion. But the overall combination of the Baron Schwartz List

Add users (automatically generate a schema with the same name as the user creates) CREATE USER "TESTER" profile "default" identified by "TESTER" default Tablespace "TESTDATA temporary tablespace" testtemp "Account UNLOCK; Empowering (to be honest,

With PHP you can easily connect to the database, request the data and display it in your Web site, or even modify the data in the database. MySQL is a very popular database, and there are many tutorials about PHP and MySQL on the internet. MySQL is

How many weeks is the current time of the system, which is the first few weeks of this year Copy Code code as follows: Select To_char (sysdate, ' ww '), To_char (sysdate, ' IW ') from dual; Select To_char (sysdate, ' DDD ') from

Query optimization on SQL statements. The foreground application works on the database server, and ultimately relies on the SQL statements in the application. According to incomplete statistics, SQL statements consume about 80% of the database

Oracle's 11GR2 version does not make much of a change to the data pump, mainly by adding support for the original version parameters and removing some small restrictions. This article describes the support of the data pump version. In 11.2, Oracle

The establishment and use of Oracle database linkFirst, the establishment of the database link:1, the database link building syntax is generally: Create databases Link[db_link_name] CONNECT to[USER_NAME] identified by [password] USING ' [tns_name] ';

--Create synonymsCreate public synonym employees for hr.employees; --Common synonymsCreate public synonym permissions RequiredAll users of the table are granted public permissionsGrant Select on employees to public;Create synonym t1_s for T1;

I. PreparationsTo integrate the Linux/Apache/PHP4/FastCGI/Oracle/MySQL environment, you must first prepare the following software packages:(1) Perl interface for database tutorials1. perl5 Oracle DBI Driver: DBD-Oracle-1.03.tar.gz2. perl5 universal

I encountered the following problems:1. The mount control file is abnormal. Replace the file and use pfile to mount the file.2. open reported the following error:Fri Jul 04 20:03:23 2014Alter database openBeginning crash recovery of 1

During routine maintenance of Oracle databases, we may often encounter errors that we have never seen before, or even inexplicably. In many cases, you cannot even search for related content through metalink, baidu, or google. This is not the case.