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Oracle remote connection (PLSQL, SQL developement + Oracle database + client + remote connection settings, plsqldevelopement Server Configuration: oracle11g R2 x64 1. Set the listener A. Launch bar-> Start-> Program-> Oracle-OraDb11g_home1-> Configure and port tools-> Net Manager B.

Oracle learning notes 4 SQL commands (2): SQL operation language category, oracle learning notes SQL is classified into the following language categories1. Data Definition Language (DDL)Create, Alter, Drop 2. Data manipulation language (DML)Insert, Select, Delete, Update 3.

SQL optimization skills (Oracle), SQL optimization skills oracle SQL optimization tips (1): Connection sequence in the Where clause: oracle parses the where clause in order from bottom to top. According to this principle, the conn

Oracle tutorial pl/SQL introduction, oracle tutorial plsql This example describes Oracle pl/SQL. We will share this with you for your reference. The details are as follows: I. What is pl/SQL? Pl/

Tags: china-pub computer OracleThis is a high quality pre-sale recommendation of Computer class OCA Certification Exam Guide (1z0-061) Oracle Database 12c SQL Foundation ". Oracle Certified Master (OCM) 's latest work, the OCA Certification exam official book, covers all OCA goals for the 1z0-061 exam. Content Intr

both Oracle and SQL Server follow the SQL-92 standard: http://owen.sj.ca.us/rkowen/howto/sql92F.html , but there are some differences, the difference is as follows: Oracle table name, field name, stored procedure name, variable name cannot exceed 30 string lengths. The top syntax is not supported in

This article is purely gossip and basically has no practical value. Oracle always uses SQL _ID to mark a unique SQL statement. SQL _ID corresponds to SQL _TEXT one by one. If the two SQL texts are different, including spaces and o

Oracle BASICS (5) Advanced pl/SQL (paging process)Compile the paging process to implement the paging process through pl/SQL, and then step by step from simple to difficult. The purpose is to familiarize yourself with the various stored procedures, packages, and cursors of pl/SQL through this case, learning how to call

How Does oracle obtain the SQL Execution Plan of the client to optimize the SQL statement? Today is September 25,. I continue to learn about SQL optimization and have written two notes on how to obtain the SQL Execution Plan. Although the notes are a bit rough, you can find

Oracle experiences 1 -- oracle introduction @ basic SQL statement @ conditional query @ sort data theory and case studies1. Oracle IntroductionOracle is the first word for English translation of oracle (Oracle bone inscriptions) U

Tags: style io ar using SP for data on art1.string Contact operatorSQL Server use + or contact (SQL Server 2012)In Oracle, you can also use the contact, but can not used + to the contact string, you should use | |;2.oracle date time is different with SQL Server date.SQL Server Date just has a date part, not contains ti

When Oracle database performance problems occur, it is effort-saving to use the Oracle toolkit and give reasonable optimization suggestions. The following two packages are described and their specific practices. The smallest adjustment tool for SQL Tuning Advisor. Use one or more SQL statements as the input content, an

graphical tools for SQL optimization, it is always a good idea to write your own SQL tools to solve the problem:SELECT executions, disk_reads, Buffer_gets, ROUND ((buffer_gets-disk_reads)/buffer_gets,2) Hit_radio, ROUND (DISK_ reads/executions,2) Reads_per_run, sql_text from V$sqlarea WHERE executions>0 and buffer_gets > 0 and (buffer_gets-d Isk_reads)/buffer_gets An index is a conceptual part of a table u

Oracle SQL uses with recursive analysis (for example) and oracle Recursion The WITH recursion provided by Oracle is not just a repetition of tree-like queries. In fact, recursive WITH statements can provide more flexible tree-like Query functions. The following describes the CYCLE statement. This statement not only su

Label:Free installation of Oracle clients using PL/SQLThe Oracle client is annoying, and deploying a connection to it usually requires the client to install it, and the installer requires the registry to be written on the target machine, assuming you're not a neat freak, you could still be stuck with something like this: when other programs on your machine rely on x64 's

Original posts by QingyunPublished on 2010-6-21 15:44When writing PL/SQL, there is a very important point of attention;Like what:BeginUpdate a SQL Server table @dblink name ...;Update a table for an oracle ...;EndThis PL/SQL execution will error:The error message is:-------------------------------------------

The remote connection of Oracle database can be implemented in a variety of ways, this article mainly introduces four methods and considerations of remote connection, and through the examples to illustrate, then we begin to introduce.First case:If the Oracle server is installed on this machine, then there is not much to say, the connection is only the user name and password problem. However, be aware that t

Tags: share development client Analytics admin hint Dev Oracle strConfiguring the Environment Oracle Service SideOracle_winx64_12c_database.iso Oracle ClientInstantclient-basiclite-nt-12.1.0.1.0.zip Integrated development EnvironmentPL/SQL Developer 10.0.5.1710 Configuration steps Make sure that

? In this case, what should the database management system do? Oracle and SQL Server adopt different solutions to this problem. SQL Server Method Now, assume that someone is modifying the data stored on SQL Server, and the data is immediately locked by the database. The data Lock operation blocks any other connecti

Reposted from: longtang Bay 1.1.1 obtain the first N records SQL Server: Select Top N * From xtable ORACLE: Select * From xtable where rownum DB2: Select * From xtable fetch first n rows only 1.1.2 obtain the current date SQL Server: Select getdate () ORACLE: Select sysdate from dual DB2: Select current timestamp from