Oracle

The following articles mainly introduce the core technologies related to Oracle Database disaster protection. We all know that Oracle recovery management (RMAN) there are many functions available to help with backup and recovery processes. This tool

The following articles mainly describe how OraclePL and SQL read BLOB fields from the database. If you are interested in the actual operations, the following articles will provide you with relevant knowledge. I hope you will gain some benefits. 1.

For a database administrator, the best thing he can do for his database is to make it start with a reasonable logical design. Unfortunately, the database design is often done in a rush so that it is wrong, or even reworked after the database is

Before you know how to create an Oracle instance, you must understand the instance definition. When talking about Oracle databases, we are likely to refer to the entire Oracle Database Management System DBMS). But as an Oracle database personnel, we

We want to share with you today that Oracle uses the cursor. Here we need the relevant declaration. The cursor we refer to generally refers to the explicit cursor, so from now on, unless otherwise specified, the cursor we call is an explicit cursor.

The following articles mainly introduce the actual operation steps for Oracle left join and right join, if you are interested in the actual operations related to the actual operation steps of Oracle left join and right join, you can click to view

Today we will discuss with you the summary of Oracle management issues. Do you want to know how Oracle manages concurrency and recovery Control for related SQL statements? The following article is about how to solve this problem. I hope you will get

The following articles mainly describe the actual application solution of the Oracle stored procedure. This article mainly uses code to introduce the actual operation of the Oracle stored procedure. The following describes the specific solution, I

Oracle Reports have some strong features that allow you to easily browse data, but you need to do some additional work on the form. In particular, reports are good at displaying subtotal-or even at multiple layers. Even if the organization chooses

Optimization and adjustment of worker ie performance is a system project. The objective is to ensure that the Oracle database runs in the optimal performance state. The database optimization strategy should be considered before the information

The following articles will teach you how to view the current number of connections in Oracle and how to view the current number of connections in Oracle databases? We only need to use the following SQL statements for query. The following describes

Oracle case usage. We all know that Oracle CASE expressions can be used in SQL to implement the if-then-else logic. PL/SQL is not required. In fact, CASE works in a similar way as DECODE (), but CASE should be used because it is compatible with ANSI.

Today we will mainly introduce the methods and practical applications of Oracle Virtual Data Control. We all know that with the wide application of Oracle Database technology, the number of users using Oracle databases will also increase and the

We all know that in the actual development environment and test environment of Oracle databases, the actual log mode of Oracle databases and the automatic Oracle archive mode are generally not set, the main purpose is to facilitate the adjustment of

The following articles mainly describe how to solve the problem of Oracle Chinese Character length. If you are interested in the specific operation related to the problem of Oracle Chinese Character length, the following is a description of the

This article mainly introduces you to the actual operations of the (+) connection in the Oracle database. This article describes the actual operations using the relevant code, if you are a crazy group of (+) connections in Oracle databases, do not

Today we mainly introduce you to Oracle Database ORA-01460 errors in actual operations, we all know that using PL/SQL DEVELOPER 7 to connect to a newly installed Oracle Server sometimes has a ORA-01460 error, for example, type conversion error. Only

The following articles mainly introduce the specific operation steps for shutting down the Oracle deadlock process. We first start from checking which actual process is locked. The following describes the specific content of the article, the

In Oracle, The SYS_CONNECT_BY_PATH function is a very important function. The following describes an example of using the SYS_CONNECT_BY_PATH function. The example is as follows: Create table test (a varchar2 (10), B varchar2 (10 ));  

In addition to single-row functions, there is another type of functions in oracle, that is, oracle Aggregate functions. Let's take a look at oracle Aggregate functions. Oracle Aggregate functions are very useful, mainly used for statistics, averages