search
HomeDatabaseMysql TutorialOracle新手最常碰到错误及解决方案

1、ORA-12541:TNS:没有监听器 原因:没有启动监听器或者监听器损坏。 若是前者,使用命令启动监听:net start OracleOraDb10g_home1TNSListener(名字可能有出入)即可 停止监听:net stop OracleOraDb10g_home1TNSListener; 如果是后者,则使用Net Configurati

1、ORA-12541:TNS:没有监听器

   原因:没有启动监听器或者监听器损坏。
若是前者,使用命令启动监听:net start OracleOraDb10g_home1TNSListener(名字可能有出入)即可 停止监听:net stop OracleOraDb10g_home1TNSListener;
如果是后者,则使用“Net Configuration Assistant”工具向导之“监听程序配置”增加一个监听器即可(基本不用写任何信息,一路OK。在添加之前可能需要把所有的监听器先删!)

  2、ORA-12500:TNS:监听程序无法启动专用服务器进程或ORA-12560:TNS:协议适配器错误

   原因:ORACLE的数据库服务没有启动。使用命令net start OracleServiceORCL(ORADB为数据库名字)即可。如果仍没有解决,请继续向下看。

  3、如果数据库服务启动失败,则很有可能是其注册表项值损坏,最好的做法是以下两步:

   1)ORADIM -DELETE -SID oradb 删除数据库服务项

   2)ORADIM -NEW -SID oradb 新增数据库服务项

   注:这个过程中如果出错,就重启计算机!

  4、ORA-12154:TNS:不能解析服务名

   原因:ORACLE的网络服务名没有正确配置。请使用“Net Configuration Assistant”工具向导之“本地网络服务名配置”配置TNS即可。如果仍没有解决,请继续向下看。

  5、ORA-1034 :TNS:ORACLE不可用

   原因:ORACLE的数据库服务正确启动,但是数据库没有打开!

  使用命令:

   1)svrmgrl 启动服务管理器

   2)connect internal 以internal身份登陆

   3)startup 打开数据库

6. ORA-12154:TNS:不能解析服务名

今天手工配置服务名,登录pl/sql出现了ORA-12154:TNS:不能解析服务名的错误,以前都是手工配置今天搞的莫名其妙。请教一高手,后来使用了这个指令netca指令,进行了验证,报错了这个错误“之前或之中出现意外的字符或文字”

C:/Documents and Settings/Administrator>netca

Oracle Net Services 配置:
ServiceAliasException: 无法列出 Net 服务名: TNS-04404: 没有错误
caused by: oracle.net.config.ConfigException: TNS-04414: 文件错误
caused by: TNS-04605: 无效语法错误: www = ( 之前或之中出现意外的字符或文字 "w
ww"
用户终止了 Oracle Net Services 配置。退出代码是-1

估计这之间出现了特殊字符,或者不可见字符,记录下来以便以后出现类似的错误。

删除后重新配置了一遍好了,经验的积累,需要一个过程。

7.ORA-12560: TNS: 协议适配器错误

出现该原因在linux下有可能是防火墙强的原因:

#iptables -F 关闭防火墙就可以解决了。

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
Adding Users to MySQL: The Complete TutorialAdding Users to MySQL: The Complete TutorialMay 12, 2025 am 12:14 AM

Mastering the method of adding MySQL users is crucial for database administrators and developers because it ensures the security and access control of the database. 1) Create a new user using the CREATEUSER command, 2) Assign permissions through the GRANT command, 3) Use FLUSHPRIVILEGES to ensure permissions take effect, 4) Regularly audit and clean user accounts to maintain performance and security.

Mastering MySQL String Data Types: VARCHAR vs. TEXT vs. CHARMastering MySQL String Data Types: VARCHAR vs. TEXT vs. CHARMay 12, 2025 am 12:12 AM

ChooseCHARforfixed-lengthdata,VARCHARforvariable-lengthdata,andTEXTforlargetextfields.1)CHARisefficientforconsistent-lengthdatalikecodes.2)VARCHARsuitsvariable-lengthdatalikenames,balancingflexibilityandperformance.3)TEXTisidealforlargetextslikeartic

MySQL: String Data Types and Indexing: Best PracticesMySQL: String Data Types and Indexing: Best PracticesMay 12, 2025 am 12:11 AM

Best practices for handling string data types and indexes in MySQL include: 1) Selecting the appropriate string type, such as CHAR for fixed length, VARCHAR for variable length, and TEXT for large text; 2) Be cautious in indexing, avoid over-indexing, and create indexes for common queries; 3) Use prefix indexes and full-text indexes to optimize long string searches; 4) Regularly monitor and optimize indexes to keep indexes small and efficient. Through these methods, we can balance read and write performance and improve database efficiency.

MySQL: How to Add a User RemotelyMySQL: How to Add a User RemotelyMay 12, 2025 am 12:10 AM

ToaddauserremotelytoMySQL,followthesesteps:1)ConnecttoMySQLasroot,2)Createanewuserwithremoteaccess,3)Grantnecessaryprivileges,and4)Flushprivileges.BecautiousofsecurityrisksbylimitingprivilegesandaccesstospecificIPs,ensuringstrongpasswords,andmonitori

The Ultimate Guide to MySQL String Data Types: Efficient Data StorageThe Ultimate Guide to MySQL String Data Types: Efficient Data StorageMay 12, 2025 am 12:05 AM

TostorestringsefficientlyinMySQL,choosetherightdatatypebasedonyourneeds:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseTEXTforlong-formtextcontent.4)UseBLOBforbinarydatalikeimages.Considerstorageov

MySQL BLOB vs. TEXT: Choosing the Right Data Type for Large ObjectsMySQL BLOB vs. TEXT: Choosing the Right Data Type for Large ObjectsMay 11, 2025 am 12:13 AM

When selecting MySQL's BLOB and TEXT data types, BLOB is suitable for storing binary data, and TEXT is suitable for storing text data. 1) BLOB is suitable for binary data such as pictures and audio, 2) TEXT is suitable for text data such as articles and comments. When choosing, data properties and performance optimization must be considered.

MySQL: Should I use root user for my product?MySQL: Should I use root user for my product?May 11, 2025 am 12:11 AM

No,youshouldnotusetherootuserinMySQLforyourproduct.Instead,createspecificuserswithlimitedprivilegestoenhancesecurityandperformance:1)Createanewuserwithastrongpassword,2)Grantonlynecessarypermissionstothisuser,3)Regularlyreviewandupdateuserpermissions

MySQL String Data Types Explained: Choosing the Right Type for Your DataMySQL String Data Types Explained: Choosing the Right Type for Your DataMay 11, 2025 am 12:10 AM

MySQLstringdatatypesshouldbechosenbasedondatacharacteristicsandusecases:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseBINARYorVARBINARYforbinarydatalikecryptographickeys.4)UseBLOBorTEXTforlargeuns

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool