oracle sql tuning books

Book Description Oracle PL/SQL recipesIs yourGoBook for PL/SQL programming solutions. it takes a task-oriented approach to PL/SQL programming that lets you quickly look up a specific task and see the pattern for a solution. then it's as simple as modifying the pattern for your specific application and implementing it

Tags: array rar organization Throw exception build log job schedule exec expressionThis week's book is the Ultimate guide to Oracle's C PL (SQL) programming, published by the mechanical industry press, Sun Fingdong, Wang Yu, Guo Xiaohui. Content Introduction: The ultimate guide to Oracle 12c PL/SQL is the most systematic, comprehensive, practical and

With SPA, you can play a specific stream based on various types of changes (such as initialization parameter changes, optimizer statistics refresh, and database upgrades)SQL or the entire SQL load, and then generate a comparison report to help you evaluate their impact. In versions earlier than Oracle Database 11g, I must capture all

I found a This book starts with some of the most basic knowledge and works with easy-to-understand examples to help you get started with simple knowledge points at and then go deeper step by step, each step will be used in concert with the example to explain to you. One small step at a time is the foundation of the next step, until the usage is relatively advanced. Oracle10g PL/SQL programming tutorial book PDF: http://www.bkjia.net/thread-2173-1-1

With the SPA, you can play specific types of changes depending on the type of change (such as initialization of change, optimizer statistics refresh, and database upgrade)SQL or the entire SQL payload, and then generate a comparison report that helps you evaluate their impact.In the version number prior to Oracle Database 11g, I had to capture all the

Database images are used to move database transactions from one database to another in different environments. An image copy is a backup copy and cannot be accessed directly. It is used only when an error is restored. Oracle databases differ significantly from MSSQL data operations, but there is an analogy in image operations. This article describes how MSSQL database images are implemented in Oracle databa

procedures)SQL code Create procedure Xiaozhengge @sqlstr nvarchar (4000), --query string @currentpage int, --page n @pagesize int --Number of rows per page As SET NOCOUNT on DECLARE @P1 int, --P1 is the ID of the cursor @rowcount int EXEC sp_cursoropen @P1 output, @sqlstr, @scrollopt =1, @ccopt =1,@[email protected] output Select Ceiling (1.0* @rowcount/@pagesize) as total number of pages--, @rowcount as rows, @currentpage

columns containing null according to your own wishes, you can perform the preceding operations. [MySQL ]:MySQL is the same as sqlserver, and null is the minimum by default. The solution is the same as that of sqlserver. Note:1. When a null column is used as a query condition, no matter whether you use >/ The age field with ID 4 is empty, Run SQL: Select * from student where age> = 30; the result is as follows: Run

oracle| optimization 1. The statements that have been validated are exactly the same as those already in the shared pool 2. Variable names as consistent as possible 3. Rational use of outer joins 4. Use fewer layers of nesting 5. Multi-use concurrency The optimization steps for a statement are generally: 1. The SGA area is adjusted so that the SGA area is optimally used. 2. optimization of the SQL statemen

One: Select Cardid, borrowdate from borrow where To_char (To_date (borrowdate, ' yyyy-mm-dd '), ' yyyy ') = ' all ' and to_char ( To_date (borrowdate, ' yyyy-mm-dd '), ' mm ') >= ' "and To_char (to_date (borrowdate, ' yyyy-mm-dd '), ' mm ') Way two: Select Cardid, borrowdate from borrow where To_char (To_date (borrowdate, ' yyyy-mm-dd '), ' yyyy ') = ' all ' --query and To_char (To_date (borrowdate, ' yyyy-mm-dd '), ' yyyy-mm ') >= ' 2014-02 ' and to_char (to_date (Borrowdate, ' Yyyy-mm-dd '

Tags: des blog http io ar os using SP forHttp://www.cnblogs.com/sopost/archive/2010/10/11/2190076.html in the SQL statement optimization process, we often use the hint, now summarize the SQL optimization process common Oracle Usage of hint:1./*+all_rows*/Indicates that the cost-based optimization method is selected for the statement block, and the optimal through

DBMS_SPM packageLoad_plan_from_cursor_cache process or load_plan_from_sqlset process to migrate itto the SQL plan baseline. When the migration is complete, you should disable or delete the original storage outline. Possible SQL Plan manageability Scenarios What are the possible SQL plan manageability scenarios? Database Upgrade: When you upgrade a

Tags: related CLOB fields Federated recycle real-time Evel further runDynamic performance View V$sql_monitor, which displays SQL statement information for Oracle monitoring. The information in V$sql_monitor and V$sql_plan_monitor will be refreshed in real time, at 1 times per second. Once the SQL statement is executed, the monitoring information will not be delet

A virtual index is a "false" index, which is defined in a data dictionary, but does not have the corresponding index segment, that is, it does not allocate any storage space. Using Virtual indexes, developersYou do not need to wait for the index to be created, or you do not need additional index storage space, you can use it as an index that already exists and test the execution plan of the SQL statement. If the optimizer isThe execution plan for

Programmers do not seem to have a better way to do this, and for each of these functions, it is expensive to write the stored procedure separately.This article is to do is a sentence SQL implementation of this function.First of all, this business has two key points.one is the string concatenation , Oracle (11.2) provides the LISTAGG function has implemented this function, we can directly use.The second is

Programmers often write on their resumes to familiarize themselves with Oracle and SQL Server. So it is very likely to be asked about the difference between Oracle and SQL Server, and many people are being asked. I have never thought about this problem. I usually take a lot of features into consideration. This is nothi

Author: b0mb # qq.com Different databases have different syntax injection statements and different codes: Https://www.2cto.com/calender. asp? Day = 7% 20 UNION % 20 SELECT % 20 NULL % 20 from % 20dual- This dual is a pseudo-table of oracle. It does not store data, just like a temporary table. If this is an oracle injection point, this error will occur. Code: [Oracl