search
HomeDatabaseMysql Tutorial这几天使用Oracle的总结

这几天使用Oracle的总结

Jun 07, 2016 pm 03:39 PM
oracleusecreatehowSummarizespace

如何创建表空间? create tablespace test logging datafile 'D:\oracle\oradata\orcl\test.ora' size 50m autoextend on next 50m maxsize unlimited extent management local; 如何创建用户? create user username profile default default tablespace te

如何创建表空间?

create tablespace test logging datafile 'D:\oracle\oradata\orcl\test.ora' size 50m autoextend on next 50m  maxsize unlimited extent  management local;


如何创建用户?

create user username profile default default tablespace test;


如何给用户赋相应的权限?


grant dba,connect,resource to username;


如何往创建的表空间里导入dmp数据?

imp username/userpassword@orcl file=D:/oracle/oradata/some.dmp full=y ignore=y


相应的导出如何操作?

exp username/userpassword@orcl file=D:/oracle/oradata/outputdata.dmp owner=username


视图的使用?发生视图丢失???我完善的一个模块其中的bug就是因为视图的丢失

数据库视图丢失。


晚上11点,我的Oracle又发生了一些事情。过程是这样的

白天我的项目部署后显示的数据不完全,所以想回家重新导入数据。但是我把用户相关的删除之后,删不掉ora文件,所以我就到windows的服务里关闭了所有的Oracle服务,然后把相关的ora文件删除了。但是之后在登录重新创建表空间时,总是提示:ORA-01033:ORACLE initialization or shutdown in progresss即初始化或关闭正在进行中,登录不了。我启动Oracle服务也不行,还是报这个错误!重新启动也还是没有作用,还是不行。

20120717Oracle使用报错ora-01033 Oracle 初始化或关闭进行中

一下是网上搜索的文章,成功解决了这个问题

在此之前需要先连接上数据库

进入cmd命令模式,输入命令sqlplus /NOLOG

进入到sqlplus模式,然后connectOracle用到的命令是

SQL>connect sys/change_on_install as sysdba 

提示:已成功 

使用一下命令删除相应的文件就好了。

SQL> startup
ORACLE instance started.

Total System Global Area 914358272 bytes
Fixed Size 2088184 bytes
Variable Size 528483080 bytes
Database Buffers 377487360 bytes
Redo Buffers 6299648 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 8 - see DBWR trace file
ORA-01110: data file 8: '/var/opt/gssyneeadb/gssy_neeadb.dbf'


SQL> ALTER SYSTEM SET "_allow_resetlogs_corruption"=TRUE SCOPE=SPFILE;

System altered.

SQL> shutdown
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.

Total System Global Area 914358272 bytes
Fixed Size 2088184 bytes
Variable Size 528483080 bytes
Database Buffers 377487360 bytes
Redo Buffers 6299648 bytes
Database mounted.
SQL> alter database datafile '/var/opt/gssyneeadb/gssy_neeadb.dbf' offline drop;

Database altered.

SQL> shutdown
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area 914358272 bytes
Fixed Size 2088184 bytes
Variable Size 528483080 bytes
Database Buffers 377487360 bytes
Redo Buffers 6299648 bytes
Database mounted.
Database opened.
SQL>


好使了。。。汗





Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Explain the InnoDB Buffer Pool and its importance for performance.Explain the InnoDB Buffer Pool and its importance for performance.Apr 19, 2025 am 12:24 AM

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

MySQL vs. Other Programming Languages: A ComparisonMySQL vs. Other Programming Languages: A ComparisonApr 19, 2025 am 12:22 AM

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages ​​such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages ​​have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

Learning MySQL: A Step-by-Step Guide for New UsersLearning MySQL: A Step-by-Step Guide for New UsersApr 19, 2025 am 12:19 AM

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL: Essential Skills for Beginners to MasterMySQL: Essential Skills for Beginners to MasterApr 18, 2025 am 12:24 AM

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL: Structured Data and Relational DatabasesMySQL: Structured Data and Relational DatabasesApr 18, 2025 am 12:22 AM

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL: Key Features and Capabilities ExplainedMySQL: Key Features and Capabilities ExplainedApr 18, 2025 am 12:17 AM

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

The Purpose of SQL: Interacting with MySQL DatabasesThe Purpose of SQL: Interacting with MySQL DatabasesApr 18, 2025 am 12:12 AM

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

MySQL for Beginners: Getting Started with Database ManagementMySQL for Beginners: Getting Started with Database ManagementApr 18, 2025 am 12:10 AM

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.