current location：Home > Technical Articles > Database > Oracle
- Direction：
- All web3.0 Backend Development Web Front-end Database Operation and Maintenance Development Tools PHP Framework Daily Programming WeChat Applet Common Problem Other Tech CMS Tutorial Java System Tutorial Computer Tutorials Hardware Tutorial Mobile Tutorial Software Tutorial Mobile Game Tutorial
- Classify：
-
- oracle delete table partition
- In Oracle database, table partitioning is a convenient way to manage and query large amounts of data. However, you may encounter some problems when you need to delete a table partition. In this article, we will discuss how to delete table partitions in Oracle database. 1. Determine the partition to be deleted. Before deleting the table partition, you need to determine the name of the partition to be deleted. You can query all partitions of a table using the following command: ```SELECT table_name, partition_nameFROM user_tab_p
- Oracle 1059 2023-05-14 13:04:08
-
- oracle clob conversion
- The CLOB (Character Large Object) data type in Oracle database allows the storage of large amounts of character data, supporting up to 4GB of character storage. In actual application scenarios, we often need to convert CLOB type data into data in other formats, such as strings, XML or JSON, etc. This article will introduce how to convert CLOB data in Oracle database, and also discuss some issues that need attention. 1. Convert CLOB to string in Oracle, convert
- Oracle 3204 2023-05-14 12:22:09
-
- oracle batch delete
- In Oracle database, if you need to delete data in batches, there are many methods and tools to choose from. This article will introduce some practical methods to help administrators delete data in Oracle databases more efficiently. Method 1: Use SQL statements to delete in batches In Oracle, using SQL statements to perform batch deletions is the most common method. You can use the DELETE statement to specify the rows to be deleted through the WHERE clause and delete qualified data in batches. Sample code: ```DELETE FROM table_n
- Oracle 3660 2023-05-14 11:49:36
-
- oracle linux system installation
- Oracle Linux is a very popular enterprise operating system that is very similar to the Red Hat Enterprise operating system. If you want to install an Oracle Linux system, this article will provide you with a simple installation step guide. Step 1: Download Oracle Linux First, you need to download Oracle Linux. You can go to Oracle’s official website (https://www.oracle.com/linux/downloads/)
- Oracle 1872 2023-05-14 11:36:07
-
- How to configure oracle
- Oracle is a relational database management system that is widely used in enterprise-level application development and data management. Oracle configuration is one of the skills that database administrators must master. A good configuration can improve system performance and data security. This article will introduce the basic knowledge and steps of Oracle configuration. 1. Install Oracle software. First, you need to download the Oracle software from the official website and install it according to the prompts. During the installation process, you can choose to install Oracle Database software and Oracle
- Oracle 1965 2023-05-14 11:32:07
-
- Modify oracle database password
- Oracle Database is one of the most popular relational databases in the world. It has powerful features and excellent stability, so many businesses and organizations rely on it to store and manage valuable data. To protect this data, database administrators need to frequently update database passwords. This article explains how to change the Oracle database password. Whether you are managing an Oracle database for the first time or want to review the process, this article will guide you. Step 1: Copy the password file to a new location before modifying Oracle data
- Oracle 1412 2023-05-14 11:24:07
-
- oracle modify view
- In Oracle database, a view is a virtual table that is the result of retrieving data from one or more tables in the database. Views can simplify complex queries and data access, speeding up queries. However, in actual use, we may need to modify the definition of the view to adapt to new business needs or changes in data structure. So, how to modify the view in Oracle database? This article will give detailed answers. 1. Modify the SELECT statement of the view. A view is the result of a SELECT query based on one or more tables. Therefore, to modify the view
- Oracle 2101 2023-05-14 11:18:09
-
- oracle closes connection
- In daily database use, it is often necessary to open some connections to perform various operations. However, sometimes when we are done, we need to close these connections to release resources or for security reasons. For Oracle databases, this article explains how to close a connection. 1. Check the connections Before closing the connections, we need to check which connections are currently open. You can obtain the details of the current connection through the following SQL query: ```SELECT sid, serial#, username, pro
- Oracle 1833 2023-05-14 10:54:37
-
- oracle string removal
- Detailed explanation of the method of removing specified characters from Oracle strings. In Oracle database, string operations often need to be performed. One of the common requirements is to remove specified characters from strings. This article will introduce several methods for removing specified characters from strings in Oracle database. Method 1: Replace with REPLACE function The REPLACE function can replace some characters or character sequences in the string with another character or character sequence. Therefore, we can use the REPLACE function to remove specified characters from a string. suppose i
- Oracle 6757 2023-05-14 10:50:38
-
- $sql oracle modification
- Oracle is a software widely used in database management systems, providing powerful data management and query functions. When using Oracle for data management, it is often necessary to modify the table structure in the database to adapt to changes in data management requirements. In Oracle, the syntax for modifying the table structure is relatively complex and requires attention to many details. This article will introduce the relevant knowledge of modifying the table structure in Oracle to help readers manage data more smoothly at work. 1. Add new columns. To add new columns, you can use ALTER TABLE.
- Oracle 536 2023-05-14 10:32:08
-
- Garbled characters appear in oracle
- Oracle database management system is an enterprise-level relational database system that is widely used in database development and management. However, in actual applications, many users have encountered the problem of garbled characters in Oracle, which has caused great trouble to DBAs and developers. This article will introduce in detail the causes and solutions to the Oracle garbled problem. 1. The root cause of the garbled code problem. The emergence of Oracle garbled code problem is mainly due to the inconsistency of character sets. In Oracle, our common character sets include AL32UTF8, UTF-8,
- Oracle 3670 2023-05-14 10:00:07
-
- oracle cannot start monitoring
- When using Oracle database, you may encounter a situation where monitoring cannot be started. This is very inconvenient for users who want to connect to the Oracle database because they cannot access the database and perform the required operations. At this point, we need to solve this problem so that the monitoring can work properly. There may be many reasons why monitoring cannot be started. Generally speaking, there are the following situations: 1. Listener configuration error: There may be errors in the monitoring configuration file or incorrect configuration, so monitoring cannot be started. 2. Port conflict:
- Oracle 2139 2023-05-14 09:59:37
-
- oracle conversion time format
- In Oracle database, the timestamp data type can represent any date and time. However, its default format may not meet our needs, so time format conversion is required. This article will introduce how to use conversion functions to achieve time format conversion in Oracle database. 1. TO_CHAR function The TO_CHAR function can format a date type column or value into a specified string format. Among them, the first parameter is a date type value or column, and the second parameter is a character expression in the date/time format to be converted. Commonly used
- Oracle 5689 2023-05-14 09:40:07
-
- oracle export stored procedure
- Oracle is one of the relational database management systems currently widely used in enterprise application systems. In daily database management, we often need to export stored procedures for backup or deployment. This article will introduce how to export Oracle stored procedures. 1. What is Oracle stored procedure? In Oracle database, stored procedures (Stored Procedures) can be regarded as an encapsulated database object. Its complete definition contains multiple SQL statements and can be regarded as a block-level
- Oracle 1974 2023-05-14 09:36:07
-
- centos oracle 11g installation
- CentOS 7 is one of the most widely used Linux operating systems today. For many businesses, Oracle Database is one of the most common enterprise-level databases. This article will provide you with the steps required to set up an Oracle 11g database and install it using CentOS 7. Installing Oracle 11g Before starting to install Oracle 11g, make sure you have obtained the correct version of Oracle installation media, such as oracle-11.2
- Oracle 1554 2023-05-14 09:31:37
Recommended Articles
Tool Recommendations
jQuery enterprise message form contact code
jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29
HTML5 MP3 music box playback effects
HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.
Player special effects
2024-02-29
HTML5 cool particle animation navigation menu special effects
HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29
jQuery visual form drag and drop editing code
jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29
Organic fruit and vegetable supplier web template Bootstrap5
An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03
Bootstrap3 multifunctional data information background management responsive web page template-Novus
Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02
Real estate resource service platform web page template Bootstrap5
Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02
Simple resume information web template Bootstrap4
Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02
Cute summer elements vector material (EPS PNG)
This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09
Four red 2023 graduation badges vector material (AI EPS PNG)
This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29
Singing bird and cart filled with flowers design spring banner vector material (AI EPS)
This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29
Golden graduation cap vector material (EPS PNG)
This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27
Home Decor Cleaning and Repair Service Company Website Template
Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09
Fresh color personal resume guide page template
Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29
Designer Creative Job Resume Web Template
Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
Modern engineering construction company website template
The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
