Home Database Mysql Tutorial ORA-01157: cannot identify/lock data file n 故障一例

ORA-01157: cannot identify/lock data file n 故障一例

Jun 07, 2016 pm 05:22 PM

ORA-01157通常由后台进程DBWR锁定而产生。如果在恢复期间,如数据库已经mount,而一个或多个数据文件不能打开导致数据库不能open

最近在使用swingbench的时候碰到了ORA-01157故障,下面是其具体描述与解决。

1、故障现象 
--查询视图dba_data_files时出现ORA-01157故障 
SQL> select file_name,tablespace_name from dba_data_files where tablespace_name='SOE'; 
select file_name,tablespace_name from dba_data_files where tablespace_name='SOE' 
                                      * 
ERROR at line 1: 
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file 
ORA-01110: data file 6: '/u01/Oracle/db/dbs/soe.dbf' 
 
--尝试drop tablespace 收到同样的错误 
SQL> drop tablespace soe including contents and datafiles; 
drop tablespace soe including contents and datafiles 

ERROR at line 1: 
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file 
ORA-01110: data file 6: '/u01/oracle/db/dbs/soe.dbf' 
 
2、分析 
--从错误号后的文字可判断DBWR不能识别或锁定文件号6,后面的ORA-01110给出了具体的文件位置 
--下面是错误号对应的具体描述 
SQL> ho oerr ora 01157 
01157, 00000, "cannot identify/lock data file %s - see DBWR trace file" 
// *Cause:  The background process was either unable to find one of the data 
//        files or failed to lock it because the file was already in use. 
//        The database will prohibit access to this file but other files will 
//        be unaffected. However the first instance to open the database will 
//        need to access all online data files. Accompanying error from the 
//        operating system describes why the file could not be identified. 
// *Action: Have operating system make file available to database. Then either 
//        open the database or do ALTER SYSTEM CHECK DATAFILES. 
 
--上面的描述指出了后台进程不能寻找到数据文件或者是因为文件在被其他进程使用而DBWR无法对其锁定。 
--对于象这类文件数据库将禁止对其进行访问,而其他数据文件则不受影响。 
--给出的决办法是确认错误号后的数据文件是否存在或可用,以及在open状态下执行ALTER SYSTEM CHECK DATAFILES命令   

linux

Statement of this Website
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

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

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1667
14
PHP Tutorial
1273
29
C# Tutorial
1255
24
MySQL's Role: Databases in Web Applications MySQL's Role: Databases in Web Applications Apr 17, 2025 am 12:23 AM

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

Explain the role of InnoDB redo logs and undo logs. Explain the role of InnoDB redo logs and undo logs. Apr 15, 2025 am 12:16 AM

InnoDB uses redologs and undologs to ensure data consistency and reliability. 1.redologs record data page modification to ensure crash recovery and transaction persistence. 2.undologs records the original data value and supports transaction rollback and MVCC.

MySQL's Place: Databases and Programming MySQL's Place: Databases and Programming Apr 13, 2025 am 12:18 AM

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

MySQL vs. Other Programming Languages: A Comparison MySQL vs. Other Programming Languages: A Comparison Apr 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.

MySQL: From Small Businesses to Large Enterprises MySQL: From Small Businesses to Large Enterprises Apr 13, 2025 am 12:17 AM

MySQL is suitable for small and large enterprises. 1) Small businesses can use MySQL for basic data management, such as storing customer information. 2) Large enterprises can use MySQL to process massive data and complex business logic to optimize query performance and transaction processing.

How does MySQL index cardinality affect query performance? How does MySQL index cardinality affect query performance? Apr 14, 2025 am 12:18 AM

MySQL index cardinality has a significant impact on query performance: 1. High cardinality index can more effectively narrow the data range and improve query efficiency; 2. Low cardinality index may lead to full table scanning and reduce query performance; 3. In joint index, high cardinality sequences should be placed in front to optimize query.

MySQL for Beginners: Getting Started with Database Management MySQL for Beginners: Getting Started with Database Management Apr 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

MySQL vs. Other Databases: Comparing the Options MySQL vs. Other Databases: Comparing the Options Apr 15, 2025 am 12:08 AM

MySQL is suitable for web applications and content management systems and is popular for its open source, high performance and ease of use. 1) Compared with PostgreSQL, MySQL performs better in simple queries and high concurrent read operations. 2) Compared with Oracle, MySQL is more popular among small and medium-sized enterprises because of its open source and low cost. 3) Compared with Microsoft SQL Server, MySQL is more suitable for cross-platform applications. 4) Unlike MongoDB, MySQL is more suitable for structured data and transaction processing.

See all articles