ORA-01157: cannot identify/lock data file 6-mysql教程-PHP中文网

首页

数据库

mysql教程

ORA-01157: cannot identify/lock data file 6

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 07, 2016 pm 05:35 PM

ORA-01157: cannot identify/lock data file 6 - see DBWR trace file ORA-01110: 解决方法

今天登陆到数据库做了一个小测试后忘记了用命令删除表空间，直接在Linux下删掉了数据文件，

结果，悲剧就开始了。(弄明白了整理出来大家共同study)

实验环境：

[Oracle@tyger ~]$ cat /etc/RedHat-release
Red Hat Enterprise Linux Server release 4.6 (Tikanga)
[oracle@tyger ~]$ . .bash_profile
[oracle@tyger ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Sat Mar 1 15:54:53 2014

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

SYS@ORCL>select status from v$instance;

STATUS
------------
OPEN

SYS@ORCL>select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

查看一下当前数据库中的数据文件有哪些

用到数据字典（dba_data_files dba_tablespaces ) 和 v$datafile

SYS@ORCL>select tablespace_name,file_name from dba_data_files;

TABLESPACE_NAME
------------------------------
FILE_NAME
--------------------------------------------------------------------------------
USERS
/u01/app/oracle/oradata/ORCL/users01.dbf

SYSAUX
/u01/app/oracle/oradata/ORCL/sysaux01.dbf

UNDOTBS1
/u01/app/oracle/oradata/ORCL/undotbs01.dbf

TABLESPACE_NAME
------------------------------
FILE_NAME
--------------------------------------------------------------------------------
SYSTEM
/u01/app/oracle/oradata/ORCL/system01.dbf

EXAMPLE
/u01/app/oracle/oradata/ORCL/example01.dbf

SYS@ORCL>col file_name for a50
SYS@ORCL>col tablespace_name for a10
SYS@ORCL>/

TABLESPACE FILE_NAME
---------- --------------------------------------------------
USERS /u01/app/oracle/oradata/ORCL/users01.dbf
SYSAUX /u01/app/oracle/oradata/ORCL/sysaux01.dbf
UNDOTBS1 /u01/app/oracle/oradata/ORCL/undotbs01.dbf
SYSTEM /u01/app/oracle/oradata/ORCL/system01.dbf
EXAMPLE /u01/app/oracle/oradata/ORCL/example01.dbf

SYS@ORCL>select tablespace_name,status,contents from dba_tablespaces;

TABLESPACE STATUS CONTENTS
---------- --------- ---------
SYSTEM ONLINE PERMANENT
UNDOTBS1 ONLINE UNDO
SYSAUX ONLINE PERMANENT
TEMP ONLINE TEMPORARY
USERS ONLINE PERMANENT
EXAMPLE ONLINE PERMANENT

6 rows selected.

SYS@ORCL>select file#,ts#,name from v$datafile;

FILE# TS#
---------- ----------
NAME
--------------------------------------------------------------------------------
1 0
/u01/app/oracle/oradata/ORCL/system01.dbf

2 1
/u01/app/oracle/oradata/ORCL/undotbs01.dbf

3 2
/u01/app/oracle/oradata/ORCL/sysaux01.dbf

FILE# TS#
---------- ----------
NAME
--------------------------------------------------------------------------------
4 4
/u01/app/oracle/oradata/ORCL/users01.dbf

5 6
/u01/app/oracle/oradata/ORCL/example01.dbf

SYS@ORCL>col name for a50
SYS@ORCL>l
1* select file#,ts#,name from v$datafile
SYS@ORCL>/

FILE# TS# NAME
---------- ---------- --------------------------------------------------
1 0 /u01/app/oracle/oradata/ORCL/system01.dbf
2 1 /u01/app/oracle/oradata/ORCL/undotbs01.dbf
3 2 /u01/app/oracle/oradata/ORCL/sysaux01.dbf
4 4 /u01/app/oracle/oradata/ORCL/users01.dbf
5 6 /u01/app/oracle/oradata/ORCL/example01.dbf

开始创建测试表空间 tyger 存储位置 '/u01/app/oracle/oradata/ORCL/tyger01.dbf' 大小为 5M。

SYS@ORCL>create tablespace tyger datafile '/u01/app/oracle/oradata/ORCL/tyger01.dbf' size 5M;

Tablespace created.

SYS@ORCL>select tablespace_name,file_name,status from dba_data_files;

TABLESPACE FILE_NAME STATUS
---------- -------------------------------------------------- ---------
USERS /u01/app/oracle/oradata/ORCL/users01.dbf AVAILABLE
SYSAUX /u01/app/oracle/oradata/ORCL/sysaux01.dbf AVAILABLE
UNDOTBS1 /u01/app/oracle/oradata/ORCL/undotbs01.dbf AVAILABLE
SYSTEM /u01/app/oracle/oradata/ORCL/system01.dbf AVAILABLE
EXAMPLE /u01/app/oracle/oradata/ORCL/example01.dbf AVAILABLE
TYGER /u01/app/oracle/oradata/ORCL/tyger01.dbf AVAILABLE

6 rows selected.

SYS@ORCL>!
[oracle@tyger ~]$ cd $ORACLE_BASE/oradata/ORCL/
[oracle@tyger ORCL]$ ll
total 1068456
-rw-r----- 1 oracle oinstall 7061504 Mar 1 16:06 control01.ctl
-rw-r----- 1 oracle oinstall 7061504 Mar 1 16:06 control02.ctl
-rw-r----- 1 oracle oinstall 7061504 Mar 1 16:06 control03.ctl
-rw-r----- 1 oracle oinstall 104865792 Mar 1 15:47 example01.dbf
-rw-r----- 1 oracle oinstall 52429312 Mar 1 15:47 redo01.log
-rw-r----- 1 oracle oinstall 52429312 Mar 1 16:06 redo02.log
-rw-r----- 1 oracle oinstall 52429312 Mar 1 15:47 redo03.log
-rw-r----- 1 oracle oinstall 251666432 Mar 1 16:05 sysaux01.dbf
-rw-r----- 1 oracle oinstall 503324672 Mar 1 16:05 system01.dbf
-rw-r----- 1 oracle oinstall 20979712 Mar 1 08:42 temp01.dbf
-rw-r----- 1 oracle oinstall 5251072 Mar 1 16:03 tyger01.dbf
-rw-r----- 1 oracle oinstall 26222592 Mar 1 16:05 undotbs01.dbf
-rw-r----- 1 oracle oinstall 5251072 Mar 1 15:47 users01.dbf

声明

本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn

mysql：blob和其他无-SQL存储，有什么区别？May 13, 2025 am 12:14 AM

mysql'sblobissuitableForStoringBinaryDataWithInareLationalDatabase，而alenosqloptionslikemongodb，redis和calablesolutionsoluntionsoluntionsoluntionsolundortionsolunsolunsstructureddata.blobobobsimplobissimplobisslowderperformandperformanceperformancewithlararengelitiate;

mySQL添加用户：语法，选项和安全性最佳实践May 13, 2025 am 12:12 AM

toaddauserinmysql，使用：createUser'username'@'host'Indessify'password'; there'showtodoitsecurely：1）choosethehostcarecarefullytocon trolaccess.2）setResourcelimitswithoptionslikemax_queries_per_hour.3）usestrong，iniquepasswords.4）Enforcessl/tlsconnectionswith

MySQL：如何避免字符串数据类型常见错误？May 13, 2025 am 12:09 AM

toAvoidCommonMistakeswithStringDatatatPesInMysQl，CloseStringTypenuances，chosethirtightType，andManageEngencodingAndCollationsEttingsefectery.1）usecharforfixed lengengters lengengtings，varchar forbariaible lengength，varchariable length，andtext/blobforlabforlargerdata.2 seterters seterters seterters seterters

mySQL：字符串数据类型和枚举？May 13, 2025 am 12:05 AM

mysqloffersechar，varchar，text，and denumforstringdata.usecharforfixed Lengttrings，varcharerforvariable长度，文本forlarger文本，andenumforenforcingDataAntegrityWithaEtofValues。

mysql blob：如何优化斑点请求May 13, 2025 am 12:03 AM

优化MySQLBLOB请求可以通过以下策略：1.减少BLOB查询频率，使用独立请求或延迟加载；2.选择合适的BLOB类型（如TINYBLOB）；3.将BLOB数据分离到单独表中；4.在应用层压缩BLOB数据；5.对BLOB元数据建立索引。这些方法结合实际应用中的监控、缓存和数据分片，可以有效提升性能。

将用户添加到MySQL：完整的教程May 12, 2025 am 12:14 AM

掌握添加MySQL用户的方法对于数据库管理员和开发者至关重要，因为它确保数据库的安全性和访问控制。1)使用CREATEUSER命令创建新用户，2)通过GRANT命令分配权限，3)使用FLUSHPRIVILEGES确保权限生效，4)定期审计和清理用户账户以维护性能和安全。

掌握mySQL字符串数据类型：varchar vs.文本与charMay 12, 2025 am 12:12 AM

chosecharforfixed-lengthdata，varcharforvariable-lengthdata，andtextforlargetextfield.1）chariseffity forconsistent-lengthdatalikecodes.2）varcharsuitsvariable-lengthdatalikenames，ballancingflexibilitibility andperformance.3）

MySQL：字符串数据类型和索引：最佳实践May 12, 2025 am 12:11 AM

在MySQL中处理字符串数据类型和索引的最佳实践包括：1)选择合适的字符串类型，如CHAR用于固定长度，VARCHAR用于可变长度，TEXT用于大文本；2)谨慎索引，避免过度索引，针对常用查询创建索引；3)使用前缀索引和全文索引优化长字符串搜索；4)定期监控和优化索引，保持索引小巧高效。通过这些方法，可以在读取和写入性能之间取得平衡，提升数据库效率。

See all articles