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Technical Articles

Database

Oracle

What is the role of oracle

Oracle is a relational database management system (RDBMS) that provides the following main functions: data storage and management (relational model) data integrity (constraints, indexes, transactions) data security (authentication, authorization, encryption) data processing (SQL Query engine) Data analytics (dashboards, reporting, visualizations) Scalability and high availability (redundancy, failover) Cost effectiveness (low cost of ownership, licensing options)

Apr 19, 2024 am 02:09 AM

oracle 敏感数据

What is the oracle rollback command?

The Oracle rollback command (ROLLBACK) undoes changes in uncommitted transactions, including insert, update, and delete operations. It is typically used to handle errors, unexpected updates, or situations where intermediate changes need to be rolled back, but changes within a committed transaction cannot be undone.

Apr 19, 2024 am 02:06 AM

oracle

What database does oracle belong to?

Oracle is a relational database management system (RDBMS) that organizes data into tables and connects tables through primary keys to ensure data consistency. Features of Oracle RDBMS include scalability, reliability, high availability, security, object orientation and performance optimization.

Apr 19, 2024 am 02:03 AM

oracle

What type of database does oracle belong to?

Oracle is a relational database management system (RDBMS) whose features include: data is stored in tables, which are composed of rows and columns. Data is organized in relationships (associations between tables). The data meets ACID properties, ensuring integrity and reliability.

Apr 19, 2024 am 02:00 AM

oracle

What is the oracle database instance name?

The Oracle Database instance name is a unique name that identifies the database instance and is used to connect to, manage, and monitor the database. It takes the format: <SID>[. <INSTANCE_NUMBER>], where <SID> is an 8-character identifier and <INSTANCE_NUMBER> (optional) differentiates between multiple instances on the same server. The instance name can be determined through a statement, the TNSNAMES.ORA file, or the lsnrctl status command.

Apr 19, 2024 am 01:57 AM

oracle linux

What should I use to replace semicolons between Oracle stored procedure statements?

In Oracle stored procedures, slashes (/) are used instead of semicolons (;) between statements, because semicolons are used to end SQL statements, and slashes allow multiple statements to be executed continuously to avoid terminating the execution of the current statement.

Apr 19, 2024 am 01:51 AM

oracle sql语句

What is the difference between buying and selling Oracle database license or not?

Purchasing an Oracle Database license provides a full feature set, unlimited database size, and multi-instance support; includes official technical support, security updates, and software enhancements. Without purchasing a license, you can only use the limited free version, which has storage capacity limits, single instance limits, and only provides limited support and maintenance. Purchasing a license requires a license fee, while the free version is free but has other restrictions.

Apr 19, 2024 am 01:48 AM

oracle

How long ago can Oracle data be restored?

Oracle Database allows users to recover data up to a specific time through Recovery Point-in-Time (RPO), which depends on the backup strategy, archive mode, corruption time, and rollback segments. Available recovery points include point-in-time recovery (PITR), crash recovery, backup/recovery, and flashback queries. The specific RPO depends on the user's specific environment and needs.

Apr 19, 2024 am 01:46 AM

oracle

What does oracle database do?

Oracle Database is a powerful RDBMS that provides the following capabilities: Data storage and management Data query and retrieval Data integrity Guaranteed security High availability and fault tolerance Scalability and performance Its advantages include: Industry-leading performance High reliability and availability Broad compatibility Mature and stable technology Broad ecosystem

Apr 19, 2024 am 01:42 AM

oracle

What language is the oracle database in?

Oracle Database is a relational database management system that provides the following benefits: Reliability: High availability, fault tolerance, and data integrity Scalability: Suitable for a variety of workload sizes Performance: Fast querying through optimized data access Security: Comprehensive protection of data from unauthorized access Availability: available on multiple platforms

Apr 19, 2024 am 01:39 AM

oracle linux 数据访问

What software is oracle used for?

Oracle is a popular enterprise-level relational database management system (RDBMS) whose main uses include data storage, management, querying, reporting, security, and application development. Its advantages are reflected in scalability, reliability, performance, security, and compatibility.

Apr 19, 2024 am 01:34 AM

oracle 敏感数据

How to change oracle database password

To change the Oracle database password, you need to perform the following steps: Connect to the database using SQL*Plus. Create a new password file. Use the ALTER USER command to update the database password. Reload the password file. Verify password change.

Apr 19, 2024 am 01:27 AM

oracle

How to check whether the oracle database listening service is started

To see if the Oracle database listener service is started, you can connect to the database server and query the v$listener view. The "STATUS" column in the result set will indicate the status of the listening service: "LISTENER" means started.

Apr 19, 2024 am 01:24 AM

oracle linux

How to configure monitoring in oracle database

To configure an Oracle database listener, perform the following steps: Create the listener and specify its name. Edit the listener configuration file, specifying the host, port, and IP address. Start the listener. Verify that the listener is running.

Apr 19, 2024 am 01:21 AM

oracle