bind variables

121. you want to create a new optimized database for your transactional production environment to be used by a financial application. while creating the database, you want the Oracle software to take care of all basic settings to optimize the

Background: Myeclipse character encoding GBK Oracle Database character encoding GBK The character encoding UTF-8 that inserts content from a third party using the webservice Interface Problem description: Pre-compiled by java PreparedStatement to

Oracle blocking (blocked), blocking Blocking is a common situation for DBAs. especially poor application design blocking can cause serious performance degradation until the database crashes. For DBA, it is necessary to know how to locate the system

Blocking blocked and racblocked in RAC Environment The blocking in the RAC environment is different from that in a single instance, because we need to consider the session in different instances. That is to say, the corresponding strain of the

Statistical information is very useful. Without it, the SQL optimizer is like a clever man! A good and efficient SQL Execution Plan depends on real statistics. However, in some cases, for example, to compare the execution plans of the production

Analysis of effective cursor Management   [Train of Thought Analysis] The cursor can be understood as a shared execution plan. When SQL is not shared, there are two common solutions: 1. Adjust the size of the Shared Pool (the shared execution

ORA-00600 error caused by cursor_sharing HOST: IBM S85Main hardware: 6 CPU + 8 GB memorySystem: AIX5.2Patch: ML04Database: Oracle 9.2.0.4Middleware: BEA Tuxedo 8.1The system is a new oltp-type financial system. The performance stress test performed

Solution to ORA-4031 errors In the face of ORA-4031 error, your heart will not send? The ORA-4031 can easily cause an abnormal database crash, which will crash when Oracle's core processes fail to get the Shared Pool memory. Of course, ORA-4031 is

We should not only write SQL statements, but also write SQL statements with excellent performance. The following sections will help the author learn, extract, and summarize some materials to share with you! (1) select the most efficient table name

SQLite for iOS development-C language interface specifications (iii) -- Binding Values To Prepared Statements, sqlite -- cbinding The previous blog introduced how to connect to the SQLite database and query and traverse result sets. Sqlite3_stmt *

Basic PL/SQL programming and plsql Programming1. Basic Structure of PL/SQL Blocks DECLARE /* * Definition section-defining constants, variables, complex data types, cursors, user-defined exceptions */ BEGIN /* * Execution part-PL/SQL statements and

Develop PL/SQL subprograms and packages, write triggers using PL/SQL, and Apply Oracle and pljdbc to JDBC. 1. subprograms: Declaration, executable, and Exception Handling (optional) 2. subprogram classification: A. Process-execute some operations A.

MU Lesson Network Video Study notes: http://www.imooc.com/learn/6941. Write HTML, JS, css to a suffix name. Vue's file, distinguish between the three types that are differentiated by , , , this. vue file is converted into traditional HTML, JS, and

Version 11.2.1.0.25 BLR 19358139 fix the following BUG: 19358139-goldengate parsing multiple times. cache the prepare update statement to Checkpoint table. 19358139 is Bug no.: Bug 19358139: goldengate parsing multiple times The bug is described as

Report trigger 1.1 which report trigger to use As a general rule, any processing that will affect the data retrieved by the report shocould be stored med in the before parameter form or after parameter form triggers. (these are the two report

For errors in a large number of DML operations, besides using the DML error logging feature to record errors during DML, use the batch SQL statement forall saveExceptions is a good choice. The usage of the DML error logging feature is relatively

Recently, PL/SQL packages were hang during compilation and initially thought they were dependent on the object being locked. Unexpected results. The following shows the code demonstration. 1. When compiling the package in SQL * Plus, the SQL> alter

The number data type is widely used in Oracle. It can store zero-value, positive-negative, and fixed-length data. There are several concepts for this data type to be clarified, otherwise it is easy to confuse, the following is a detailed description.

PL/SQL provides three common set union arrays, nested tables, and variable-length arrays, PL/SQL provides corresponding functions or procedures for operation. Element or subscript in the vertical array. These functions or procedures are called set

For data replication at the database table level, the most common method is create table as (CTAs. In fact, the copy command under SQL * Plus can do the same job, and it is better, and the performance is also better. What's more, data replication