Oracle

For this question, the initial assumption is simpler: replace the keyword and function names that are not the same in the SQL statement, such as To_date in Oracle to convert SQL Server. can be executed on SQL Server. This can be true for some simple

The flashback technology is based on the contents of the undo segment and is therefore limited by the Undo_retenton parameters. To use the Flashback attribute, you must enable the automatic undo management table space. In Oracle 10g, the Flash back

Four simple guidelines to improve the number and quality of Pl/sql code I've been writing Pl/sql code since 1990. That means I've written tens of thousands of of lines of software code, but I'm sure most of the code is very clumsy and difficult to

Method of NULL value processing for ORDER by orderingwhen the business data is sorted, it is found that some fields have a null value, then the order of the data is inconsistent with our usage. In Oracle, it is assumed that NULL is the maximum value

TNS is part of Oracle NET and is a tool designed to manage and configure Oracle databases and client connections, and in most cases the client and the database must configure TNS to communicate. This article focuses on the solution to the common

Non-Data guard patch installation tutorials refer to the [Oracle] CPU/PSU patch installation detailed tutorial, where Data Guard requires primary and standby to be patched at the same time, so the steps are more complex and the main steps are as

Today, the top request to do a similar function, the initial thought of column change, but how to achieve there is no good way, this function is good The Decode function is an Oracle Pl/sql is one of the powerful functions, and currently only

Authoritative Test organization TPC United States December 3 confirmed that Oracle company submitted the previous day SPARC T3-4 supercluster to TMPC (the number of transactions per minute) 30 249 688 created a new record of tpc-c performance

Connecting Oracle database instances through ASP.net tutorial For a long time, I have been using the MS SQL server/access database, access to Ms Home through. NET almost nothing trouble. In the recent project, Oracle was used as a database to learn

SQL Server versus Oracle, DB2 vs. Pros: 1. Openness: SQL Server Can only run on Windows, without the slightest openness, the stability of operating system systems is very important to the database. Windows9x Series products are focused on desktop

oracle| Stored Procedures | Paging |oracle| stored Procedures | Paging after looking at a number of paging stored procedures, it was found to be for SQL Server, without Oracle, so I wanted to write a stored procedure about Oracle because the

An index is a list of keywords for several data rows that, when queried for data, can be quickly positioned through the keywords in the index to the block of data to which the record is to be accessed, greatly reducing the number of I/O to the data

Today, Oracle databases are favored by more and more enterprises because of their high reliability, security and compatibility. The reader may wish to consider some of the following aspects of how to keep the Oracle database permanently in good

oracle| optimization Oracle Optimizer: Migrating to using the cost-based optimizer-----series 1.1 If you are developing an application in a previous version of Oracle (7.0 or earlier), the database uses the Rule-based optimizer (RBO), which will

oracle| notes At present, it is necessary to use Oracle's pro*c in rebuilding a service program under Linux. The following is a transcript of the study: Introduction of Pro*c In addition to providing database access to database access tools such

Method One: Use Sqlplus 64-bit: [Oracle@qs-wg-db2 ~]$ Sqlplus/as sysdba; Sql*plus:release 10.2.0.5.0-productionon Sun Sep 25 08:57:22 2011 Copyright (c) 1982, Oracle. All Rights Reserved. Connected to: Oracle Database 10g Enterprise

Character function 1.ASCII (x) and Chr (x) ASCII (x): Returns the ASCII code for the character X Chr (x): Returns a character with an ASCII code of X 2.concat (X,y) Used to add Y to X after, with | | function as 3.initcap (x) Converts the

Statistics Statistical information ---------------------------------------------------------- 197 Recursive calls 185 db block gets Consistent gets Physical Reads 37128 Redo Size 37128 Redo Amount 664 Bytes sent via sql*net to client 571

1. Check Oracle's Process $ ps-ef|grep "Ora_" |grep-v grep Oracle 5998 1 0 11:15:59 0:01 ora_j000_pprd10 Oracle 2968 1 0 21:16:57 0:00 ora_q000_pprd10 Oracle 2927 1 0 21:16:33 0:00 ora_pmon_pprd10 Oracle 2933 1 0 21:16:34 0:07 ora_dbw0_pprd10

http://blog.csdn.net/dbanote/article/details/10488581Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.There is a need to synchronize some Oracle data to MySQL, which is too cumbersome to