Oracle

With the popularization of the computer and the development of the network, the database is no longer just the topic of the programmer, but also is familiar to many people, data security is no longer the old "long talk", and more than the previous

Oracle is a high-performance database software. The user can adjust the parameters to achieve the optimization of performance. Performance optimization is mainly divided into two parts: First, the database administrator through the adjustment of

The following code has been tested to run directly Oracle analysis functions, multidimensional functions and model functions are briefly described, mainly for the BI report statistics, not necessarily very comprehensive, but a little explanation of

After installing Oracle on the Linux,unix operating system, use the Sqlplus '/as sysdba ' command to log in to the Oracle database as SYSDBA, which has some security implications, The operating system administrator can also log Oracle users to the

In a recent study of the Dbms_stats package, the following is a description of the execution plan based on the difference in granularity values, and we specify several parameters for the table or index statistics through the Dbms_stats package,

The Reset log option is used for the first time when the database is opened after the following situations: Not fully restored Recovery based on backup control files CREATE Controlfile ... Resetlogs The primary role of the reset log is to

1. Table Space (tablespace) A table space is a basic logical structure in a database, a collection of data files. A table space can contain multiple data files, but a data file can belong to only one table space. Query table space: Sql>select *

Microsoft Excel spreadsheets are widely used in today's business environment. Although Excel can read and display delimited files, the. xls proprietary format provides some other expressive features, including font formatting and multiple worksheet

An external table implementation process based on Oracle_datapump: First, create external tables and generate DMP files 1, create directory, you need to have create any directory permissions: CREATE DIRECTORY admin as '/oracle/admin '; 2, create

Having been concerned about SSIS performance issues with SQL Server 2005, one of my fellow testers tested it for reference. There is a part of the project data migration work, frankly, from the old system to switch data in the new system model, the

# cd/home/oracle/crs/log/p570b/crsd # ls-lt Total 2150168-rw-r--r--1 root system 23958 19:14 crsd.log-rw-r--r--1 root system 10555307 Oct crsd.l01-rw-r--r--1 root System 10491275 SEP crsd.l02-rw-r--r--1 root system 10558627 Aug crsd.l03- rw-r--r-

apache|js|oracle| Paging I have a detailed JSP paging program! (Oracle+jsp+apache) a prerequisite Hope that the latest record at the beginning of your table to create a query: Table: MyTable Query: Create or replace View as Mytable_view from MyTable

Directory First, sybase12.5 for NT version in the Win2000 platform installation, the interface characters appear garbled problem Second, Sybase after the network share or copy to the local hard disk, still can not install the problem Third, after

The use of bbed requires attention: 1, win under Oracle does not provide 2, with Oracle software release 3, Unix/linux under the use of the need for prior relink 4, Oracle initially used bbed to repair bad block, starting from 9i can be

In Oracle, for a committed SQL statement, there are two alternative parsing processes, one called hard parsing and one called soft parsing. A hard parsing requires many steps, such as parsing, developing execution paths, and optimizing access plans.

One, the source side Add extract Extl,vam,begin Now ADD exttrail F:oggmysqldirdatrl, EXTRACT EXTL Edit params EXTL Extract EXTL Sourcedb Test@localhost:3306,userid Root,password Xifenfei Exttrail F:oggmysqldirdatrl Dynamicresolution

One, what is the Oracle character set An Oracle character set is a collection of symbols that are interpreted as a byte of data, having a size and a mutual containment relationship. ORACLE's support for the national language architecture allows you

Oracle claims to install the Oracle9i database under Linux at least 512MB of memory and at least 1GB or twice times the memory size of the swap space, for the system memory is greater than 2GB of servers, swap space can be between 2gb-4gb. If you

How do you do this when you need a graphical display as Oracle databases are installed using Oracle VMS? Environment Introduction: ----------------------------- VM Server Host OS:VM Linux Hostname:cnexa1.cn.oracle.com ip:10.182.208.112

Five types of policies, column-related policies, and column masks make VPD a more powerful tool in the DBA's security toolbox The Virtual Private database (VPD), also known as fine-grained access control, provides powerful row-level security