oracle pl sql performance tuning tips techniques

PROCEDURE fenye (TABLENAME in VARCHAR2,PAGESIZE in number,--Display records per pagePagenow in number,--Number of pagesMyrows out number,--Total recordsMypagecount out number,--Total pagesP_cursor out Testpackage. Test_cursor) is--the recordset returned --Definition section--Define the SQL statement stringV_sql VARCHAR2 (1000);--Definition of two integersV_begin Number: = (PAGENOW-1) * PAGESIZE + 1;V_end Number: = Page

,--Display records per pagePagenow in number,--Number of pagesMyrows out number,--Total recordsMypagecount out number,--Total pagesP_cursor out Testpackage. Test_cursor) is--the recordset returned --Definition section--Define the SQL statement stringV_sql VARCHAR2 (1000);--Definition of two integersV_begin Number: = (PAGENOW-1) * PAGESIZE + 1;V_end Number: = Pagenow * PAGESIZE;BEGIN--Executive SectionV_sql: = ' select *

,--Display records per pagePagenow in number,--Number of pagesMyrows out number,--Total recordsMypagecount out number,--Total pagesP_cursor out Testpackage. Test_cursor) is--the recordset returned --Definition section--Define the SQL statement stringV_sql VARCHAR2 (1000);--Definition of two integersV_begin Number: = (PAGENOW-1) * PAGESIZE + 1;V_end Number: = Pagenow * PAGESIZE;BEGIN--Executive SectionV_sql: = ' select *

Tags: Connection query sequence developer save set bound goto RowType View\ t 1th Introduction to PL/SQL development1th Oracle 11g Database System1.1 Introduction of relational database system1.1.1 What is a relational data model1.1.2 Database System Paradigm1.1.3-relational database management system1.1.4 using SQL st

Oracle SQL injection is an old security issue. Generally, enterprise applications only focus on Java-level writing specifications, such as preparedStatement, or directly filter out dangerous characters. In fact, when compiling PL/SQL functions or procedure, there are also injection problems. Let's discuss it briefly. F

The Oracle tutorial you are looking at is the Oracle Pl/sql introductory case practice. We have already learned the basics of pl/sql programming, and this article will combine a case to deepen understanding of these knowledge poin

Oracle SQL Tuning Health Check ScriptWe focus on the performance of database system, the main task of database tuning is to optimize SQL. Good data architecture design, with application system middleware and writing a beautiful

Log on to PL/SQL Developer, log on to the local database, and check that the Oracle listening service is not started. Right-click to start the listening program and report an error. How can this problem be solved ?, I. Error description When you log on to PL/SQL Developer t

A trigger is a special type of subroutine that resides in a database. cannot be called directly by the user, but is initiated by the system when a particular event or action occursTune with the holder line. The trigger cannot accept the number of parameters. So executing a trigger is called triggering or ignition. An Oracle event refers to an INSERT, UPDATE,delete operation, or similar operation on a view of a database table. Triggers are a technique

, Microseconds_per_second ms_per_sec, pct_of_time pct from Opsg_delta_report where Microseconds_per_second > 0; Monitoring the usage of indexes: With In_plan_objects as(SELECT DISTINCT object_name from V$sql_plan WHERE object_owner = ' SCOTT ')SELECT table_name,Index_name,CaseWhen object_name was NULL then' NO 'ELSE' YES 'END as In_cached_planFrom User_indexesLeft OUTER JOIN in_plan_objectsOn (index_name = object_name);4. Identify the SQL st

Original address: Http://www.codeproject.com/Tips/1023621/SQL-Performance-Improvement-Techniques This article provides various options to improve the performance in database. 1) Re-write Query:If Any, the is taking much time-to-execute then the first step was to rewrite the

relatively easy, and your eyes will thank you. Setup method: Menu Tools --Preferences---Keyword case-to-uppercase5. Special CopySQL is written in SQL window usually need to put in Java or other languages, you need to turn into a string and add the corresponding hyphen, this thing does not need to repeat, in the written SQL right-click, using special copy is ok! Setup Method: Right--Special Copy6. Custom sh

High-performance PL/SQLAssuming the code meets functional requirements, PL/SQL code needs to meet 3 conditions to become efficient:1. Performance: The operating time is within an acceptable range.2. Impact: It does not disrupt (or weaken in some unacceptable way) any other c

Tags: n+1 tle ber and into else comment counter syntax Describes the Process Control statements for PL/SQL, including the following three classes: 1. Control statement: IF statement 2. Loop statement: Loop statement, EXIT statement 3. Sequential statement: GOTO statement, NULL statement a conditional statement IF Boolean expression> ThenPL/SQL and

Basic PL/SQL entry-Table Partitioning PL/SQL: a programming Language combined with a Structured Language (Structured Query Language). It is an extension of SQL and supports multiple data types, such as large objects and Collection types, you can use control statements such a

;preferences–> user interface –> key configuration) New SQL window: ctrl+shift+s new command window: ctrl+shift+c new test window: ctrl+shift+t PL/SQL Developer: Ctrl+shift+f Redo: ctrl+shift+z undo: Ctrl + Z clear: ctrl+d (use with caution, not recoverable, I am disabled Oh O (∩_∩) o~) Check all: Ctrl + a indent: tab Cancel indent: Shift+tab uppercase: Ctrl+shif

From the design of the Oracle shared pool and the PL/SQL writing method recommended by Oracle, we can see that variable binding has a great impact on performance, how to bind variables in PL/S