oracle pl sql performance tuning tips techniques

Most developers take for granted that performance optimization is complex and requires a lot of experience and knowledge. Well, you can't say it's completely wrong. Optimizing your application for optimal performance is not an easy task. But that doesn't mean that if you don't have the knowledge, you can't do anything. Here are 11 easy-to-follow recommendations and best practices to help you create a well-p

dbms_workload_repository. Create_snapshot;We can also use the Dbms_workload_repository package to complete the baseline, modification of the default settings and so on.ADDM (Automatic Database Diagnostic Monitor AWR)is a consultant system within Oracle that can automate some of the optimization recommendations for the most databases, give recommendations for SQL optimization, index creation, and statistics

/comprehensive) --Time_limit (in)-maximum duration in second for tuning --Task_name (in)-Optional tuning Task Name --Description (in)-Maximum of the SQL tuning session description -- --RETURNS: --SQL tuning Task unique Name -- --E

), or (or), and not (non). Not can be used to negate any logical operation symbol. The following is an example of a NOT clause: ... where not (status = ' VALID ') If you want to use not, you should precede the phrase with parentheses and precede the phrase with the NOT operator. The NOT operator is included in another logical operator, which is the not equal to ( . : Where status For this query, it can be rewritten to not use not: SELECT * FROM employee where salary Although the results of thes

. In the case of Alpha 1200 for the revenue system, the SGA is about 160 megabytes in size. Some parameters in the initialization parameter file have a decisive effect on the size of the SGA. Parameter db-block-buffers (number of buffers cached in the SGA), parameter shared-pool-size (number of bytes allocated to the shared SQL area), is the main influence of the SGA size. The Db-block-buffers parameter is the most important determinant of the SGA siz

should precede the phrase with parentheses and precede the phrase with the NOT operator. The NOT operator is included in another logical operator, which is the not equal to (... where status For this query, it can be rewritten to not use not:SELECT * FROM employee where salaryAlthough the results of these two queries are the same, the second query scenario is faster than the first query scenario. The second query allows Oracle to use indexes on salar

Label:1, PL/SQL developer remember login passwordWhen using PL/SQL developer, you want PL/SQL developer to remember the username and password to log in to Oracle for your convenience; S

An outline that is roughly written in the optimization content of the physical design and logical design of the DB, mainly physical design, logical design introduction of the content is not much, the outline of the physical structure design and example optimization of organic combination of the logical structure design and application adjustment together ... Oracle Performance

part is the main body of the PL/SQL block and contains the executable statements of the block. This part defines the block function and is required. Start with the keyword begin and end with end. PL/SQL block Exception Handling Section This part contains the exception handler (error handler) of the block ). When a sta

' Using XML, JSON, or plist Using Nscoding Archive Using a local SQL database similar to SQLite Using Core Data What is the problem with Nsuserdefaults? Although it is very nice and convenient, but it only applies to small data, such as some simple Boolean settings options, and then you need to consider other waysWhat about this structured file of XML? Overall, you need to read the entire file into memory to parse it, which is ve

/create-an-excel-file-with-plsql Http://www.jasonsdevelopercorner.com /? Page_id = 8 Https://xml-spreadsheet.samplecode.oracle.com/ Http://sanjeev-oracle-world.blogspot.com/2007/06/create-excel-workbook-by-plsql-code.html Http://matzberger.de/oracle/spreadsheet-en.html Http://www.protalk.in/oracle/plsql-tips-packa

;5 END;6/ Package created. SQL> CREATE OR REPLACE PACKAGE BODY pkg2 IS3 c_year_numberConstant integer: = 2013;45 FUNCTION year_number6 RETURN INTEGER7 IS8 BEGIN9 RETURN c_year_number;10 END;11 END;12/ Package body created. SQL> SELECT pkg. year_number2 FROM employees3 WHERE employee_id = 1384/ YEAR_NUMBER-----------2013 So much code is added to reference a constant! However, in

installation directory, and click Close. In rules file, enter the location of the configuration file and click OK to switch the configuration file. In this case, you can format the code so that each field is on a row as much as possible.4. TNS namesMenu help à support info à TNS names, you can view the tnsnames. ora of oracle.5. Copy to excelRun the SELECT statement in the SQL window. After the result is d

follows: . Pl/sql is a high-performance, transaction-based language that can run in any Oracle environment and support all data processing commands. Process SQL data definition and data control elements by using the PL/

analysis 1567.4.1 data dictionary 1567.4.2 PL/scope 1637.5 perform dynamic analysis 1757.5.1 dbms_profiler and dbms_trace 1757.5.2 dbms_hprof 1847.6 Conclusion 189Chapter 2 Contract-Oriented Programming 8th8.1 contractual design 1908.1.1 software contract 1908.1.2 elements of the basic contract 1918.1.3 asserted 1928.1.4 reference 1928.2 PL/SQL contract 1928.2.1