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- How to view oracle logs
- Oracle is a widely used database system. When a failure occurs, you need to check the logs to help solve the problem. This article will introduce how to view Oracle logs to check database problems. 1. Check the location of the database log file. First, you need to determine the location of the database log file. Oracle has three types of log files: Control Files, Log Files and Data Files. Log files are divided into online log files and archived log files. online
- Oracle 14270 2023-04-17 09:54:35
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- How to delete DBF files in Oracle database
- Oracle database is one of the most widely used databases in the world, and DBF (DataBase File) file is a data file of Oracle database, which stores the data in the database. In the process of using Oracle database, sometimes it is necessary to delete some useless data files, and the deletion operation of DBF files requires attention to some details. This article will introduce how to delete DBF files in Oracle database. First, before deleting a DBF file, you need to determine whether the file is safe to delete.
- Oracle 919 2023-04-17 09:54:28
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- How to convert character data into numeric data in oracle
- Oracle database is a very popular relational database management system with rich data types, including numeric types, character types, date types, Blob types, etc. In practical applications, we often encounter the need to convert a character type data into a numeric type. This article will introduce how to convert character data into numeric data in Oracle database. Oracle database supports several number types, including integer (INT), floating point (FLOAT), double precision (DOUBLE), etc.
- Oracle 5385 2023-04-17 09:54:07
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- How to shut down service in oracle
- Oracle shutdown service Oracle database is a relational database management system, which is widely used in enterprise-level application systems. During the process of running the Oracle database, it is sometimes necessary to shut down some of the services to reduce the load on the server or perform system maintenance. This article will discuss how to shut down services in Oracle database. 1. Stop the Oracle instance. An Oracle database instance is a process running in memory, and they use a lot of CPU and memory resources when running. therefore,
- Oracle 2462 2023-04-17 09:53:29
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- What should I do if Oracle exports garbled characters?
- Oracle Database is an enterprise-level database management system typically used to process large amounts of data. In the process of using Oracle database, we may encounter the problem of garbled characters when exporting data. This article will introduce common export garbled problems and corresponding solutions. 1. Environmental issues When using Oracle to export data, you first need to ensure that the environment is set correctly. Environmental issues may cause exported data to be garbled. Under Windows system, you can follow the following steps to set up: 1. Open the “Control Panel” and click “Region
- Oracle 3185 2023-04-17 09:53:09
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- What should I do if I forget my oracle sys password?
- Oracle's Sys Password Forgot Oracle database is currently the most popular relational database management system (RDBMS) in the world. It is used by many businesses and organizations to store and manage large amounts of data. The Oracle database has a high-privilege account named "sys", which is usually used for system administrator operations. However, sometimes, due to various reasons, the administrator may forget the password of the sys user. This article will introduce some common solutions. Method 1: Log in to the server through the command line tool
- Oracle 7450 2023-04-17 09:52:58
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- Examples to explain how Oracle creates tables using stored procedures
- Oracle Stored Procedure Creation Table In Oracle database, a stored procedure is a piece of code that can be executed multiple times and can be called in the application. Stored procedures are usually used to perform complex database operations, such as creating tables, updating tables, deleting data, etc. In this article, we will introduce the basics of Oracle stored procedures, and focus on how to create tables using stored procedures. What are Oracle stored procedures? Oracle stored procedures are a set of instructions that can be used by PL/SQL
- Oracle 2181 2023-04-04 14:36:50
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- How to create an oracle user (a brief analysis of the process)
- Oracle is a widely used relational database management system that can effectively store, manage and operate large amounts of data. When using Oracle, you need to create a user to manage and access some database objects. So, how to create an Oracle user? This article will introduce the creation process of Oracle users. 1. Log in to Oracle First, you need to log in to the Oracle database. Just log in with your administrator account and password. 2. Run SQL script After logging in, you can run the following command to create a new user: C
- Oracle 12167 2023-04-04 14:06:25
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- How to develop with oracle (tutorial)
- Oracle is one of the most famous relational database management systems in the world. Oracle database provides comprehensive and efficient data management functions and has become an indispensable part of many enterprise-level applications. This article will introduce you to Oracle development tutorials to help you better understand and master Oracle database development technology. 1. Initial understanding of Oracle As an Oracle developer, you first need to have an in-depth understanding of the characteristics and basic components of the Oracle database management system. Oracle database is a gateway
- Oracle 1184 2023-04-04 14:07:25
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- A brief analysis of the reasons and solutions for the 12154 error reported by Oracle
- Oracle Error 12154: Solutions and Strategies Oracle is one of the most widely used relational database management systems, but sometimes errors are inevitable. This article will introduce one of the more common errors - error 12154, and how to solve it. 1. Causes of error 12154 Error 12154 is usually caused by the Oracle client being unable to find the corresponding service when connecting to the server, or the service name being filled in incorrectly. Specifically, there are several possibilities: 1) The service name is filled in incorrectly. Example: The instance name is
- Oracle 7762 2023-04-04 14:08:12
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- How to recover accidentally deleted data in oracle
- As an enterprise-level database management system, Oracle is still the core data management system of many companies. However, despite Oracle's high reliability and stability, unexpected data loss often occurs in daily operations. This article will introduce how to use backup and recovery technology to make the accidentally deleted data come back to light after accidentally deleting data in the Oracle database. 1. Possibility of accidentally deleting data Due to human errors, virus attacks, hardware failures and other reasons, inadvertently deleting data is very common in enterprise database management. one
- Oracle 3945 2023-04-04 14:10:20
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- Examples explaining how to use functions in Oracle
- Oracle is a commonly used database management system with a powerful function library that can meet various needs. In this article, we will introduce how to use functions in Oracle. 1. What is an Oracle function? An Oracle function is a piece of script code that performs a series of operations and returns results when called. Functions can accept one or more parameters and can return a result if desired. Oracle functions are usually used to query and manipulate data in Oracle databases, such as calculating the length of numbers, strings, and date differences.
- Oracle 2205 2023-04-04 14:11:36
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- How to escape single quotes in oracle
- Oracle Database uses single quotes to represent string constants and character literals. However, if the string constant itself contains single quotes, you need to use an escape sequence to tell Oracle how to handle these single quotes. Otherwise, Oracle may treat the single quote as the end of the string, causing an interpreter error. To escape a single quote, you can precede the single quote with another single quote. For example, if you want to insert the last name O'Reilly into a string, you can use the following statement: ```INSERT INTO aut
- Oracle 1698 2023-04-04 14:11:52
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- How to implement scheduled deletion in Oracle (two methods)
- Oracle scheduled deletion refers to setting a scheduled task in the Oracle database to delete certain data regularly. Normally, this scheduled deletion is to ensure that the amount of data in the database is not too large, thus affecting the overall performance of the database. In Oracle database, there are many ways to achieve scheduled deletion. Below we will introduce two common methods. Method 1: Use Oracle scheduled tasks. Oracle database provides the dbms_scheduler package, which can be used to create scheduled tasks. You can use this package
- Oracle 3321 2023-04-04 14:12:33
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- How to create and manage fields in Oracle database
- A field in an Oracle database refers to each column in a table. In Oracle database, we can create and manage fields in many ways. In this article, we will detail how to create and manage fields in Oracle Database. 1. Create a table In Oracle database, to create a new table, we need to use the CREATE TABLE statement. For example, to create a table named "employees" we can use the following statement: CREATE
- Oracle 956 2023-04-04 14:13:30
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