Read about oracle pl sql performance tuning, The latest news, videos, and discussion topics about oracle pl sql performance tuning from alibabacloud.com
For PL/SQL connection, 64-bit Oracle has recently changed to 64-bit Win7, and oracle has also changed to 64-bit 11g. After the change, we found that the plsql cannot load the database at all. There are also various changes to version Shenma on the Internet. I don't want to change the version, so I figured out how to ma
In our OLAP implementation, SQL is extremely complex and uses a lot of temporary tables. During the installation of tempdb, the local disk path for SQL Server installation is selected by default, and no disk array is used. When learning PostgreSQL, we found that many experts suggest placing the temporary tablespace on SSD or using RAID0 + 1 to increase the write speed and
Label:After installing Oracle (64-bit), PL/SQL developer, execute PL/SQL occurs for example the following error:On the Internet, my PL/SQL developer is incompatible with
Oracle Database: PL/SQL cursor overview, oracleplI. cursor Concept
Literally, it refers to a swimming cursor, which is a handle or pointer pointing to the context area.
When performing the CRUD operation in the PL/SQL block, ORACLE
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
Because of the reasons for the project need to use the Oracle database, due to time constraints can not learn from the foundation, and the Oracle operation of the command interface is too unfriendly, so I found Pl/sql developer this very useful software to indirectly use the database.
Here's a brief description of how
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
Label: The execution and exception parts of PL/SQL in Oracle I. The executive section of PL/SQL.
An assignment statement.
Assignment statements are divided into two types, one defining a variable and then receiving the user's IO assignment, and the other is a
This article describes how to set the shortcut keys for PLSQL in Oracle databases, including setting MyObjects, remembering the password, and double-clicking the display table by default.
This article describes how to set the shortcut keys for PL/SQL in Oracle databases, including setting My Objects, remembering the pa
;=@firstSensorID and Msl.id@lastSensorIDSelectCount (1) as[motioninferred] from[Tracks]. [dbo]. [Monitorsensorlog] MSLwhereMsl. Sensortype='motioninferred'and msl.id>=@firstSensorID and Msl.id@lastSensorID End View Code 4.Union VS Union AllUnion: Sets the two result sets, excluding duplicate rows, and sorting the default rules. Union All: Set operation on two result sets, containing duplicate rows, without sorting. INTERSECT: Is the intersection of two query results for two result sets, excludin
Software environment: 64-bit win7, 32-bit Oracle 10g, PL/SQL 9.0.4.1644
In the past, 32-bit systems were used for development and suddenly switched to 64-bit systems. The installation environment was a little troublesome, especially for PL/SQL, which only supported 32-bit sy
The scope of the PL/SQL variable, which is valid within the current block.DeclareV_num number (5,2): = 1.23;BeginDeclare V_num char (10);BeginV_num: = 12345;Dbms_output.put_line (V_num);EndDbms_output.put_line (V_num);EndSql> Declare2 v_num Number (5,2): = 1.23;3 begin4 Declare V_num char (10);5 begin6 V_num: = 12345;7 Dbms_output.put_line (V_num);8 End;9 Dbms_output.put_line (V_num);Ten end;11/123451.23PL/
The ORACLE tutorial is Oracle PL/SQL getting started. I have already learned the basics of PL/SQL programming. This article will use a case study to deepen my understanding of these knowledge points.
I. Case Study
A database has
Prior to the project because of the need to use the Oracle database, due to limited time to start learning from the foundation, and Oracle operation of the command interface is too unfriendly, so found the PL/SQL developer This very useful software to use the database indirectly.Here's a quick introduction to using thi
Changing the vast majority of SQL queries to stored procedures can undoubtedly improve some performance.All operations that use "select * from xxx" are specific to the required fields.Join is used to connect more than two tables with a large amount of data, and views are used for queries with little changes to the basic data table, and indexes are created for the view. The reason is from the SQL Server onli
Software environment: 64-bit win7, 32-bit Oracle 10g, PL/SQL 9.0.4.1644
In the past, 32-bit systems were used for development and suddenly switched to 64-bit systems. The installation environment was a little troublesome, especially for PL/SQL, which only supported 32-bit sy
Oracle instant client is installed in Linux on the PL/SQL Dev Virtual Machine and Oracle is installed. Since PL/SQL Developer is used in Windows physical machines to connect to Oracle o
to the Tnsnames.ora file. For example, my machine is: d:/instantclient_11_2/network/admin4. Set the language of Oracle, add the environment variable Nls_lang, and the value is simplified Chinese_china. Zhs16gbkAssuming that the Oracle language of the remote database is unclear, SSH or telnet to the remote machine, enter in the command interface, and connect to the database with the command line.SELECT * fr
: Network Disk DownloadContent IntroductionEditing the volume of information contained in this book can improve your programming skills to a new level. You'll learn how to write dynamic PL/SQL programs and Oracle database interfaces, perform complex computations, and use advanced techniques to control error conditions. In addition, you will receive up-to-date inf
the same function, which has the least execution time. However, if the data volume in the database is small, it cannot be compared. In this case, you can view the execution plan, that is, you can obtain multiple SQL statements that implement the same function to the query analyzer, press Ctrl + L to view the indexes used for query, and the number of table scans (the two have the greatest impact on performance
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.