search
HomeDatabaseMysql TutorialDB_FILE_NAME_CONVERT参数导致ORA-15124:ASMfilename'..

RAC主库+DG单机环境中,一旦主备库之前有归档间隔,而这些归档可能由于种种原因被删除,如归档被清理了,备份集策略已经超出所需归档。也不用担心,可以按以下大致步骤做恢复: o 主库上做基于SCN的增量备份 o 将备份传输至备库 o 备库恢复增量备份 o 主库创

RAC主库+DG单机环境中,一旦主备库之前有归档间隔,而这些归档可能由于种种原因被删除,如归档被清理了,备份集策略已经超出所需归档。也不用担心,可以按以下大致步骤做恢复:

o 主库上做基于SCN的增量备份

o 将备份传输至备库

o 备库恢复增量备份

o 主库创建一个standby controlfile,并传输至备库

o 上一步生成的控制文件替换备库的控制文件

这几天遇到个非常奇怪的问题,主库创建standby controlfile时总是报错ORA-15124。这个问题也困扰了自己很多天。

都试过:

o 检查数据库的所有物理文件 asmcmd ls -l来查看

o 检查数据库数据字典 v$database.name / dba_data_files.file_name

o 在asmcmd debug模式下ls -l 查看文件

o 检查ASM的v$asm_file, v$asm_alias等等

o 对ORA-15124做10046和errorstack

o 检查DG备份等等

在创建standby controlfile依旧报错,错误如下:

SQL> show parameter conver;

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_file_name_convert string /data, +DATA/orcl/datafile
log_file_name_convert string /data, +DATA/orcl/onlinelog

(实际过程中,这两个参数如此配置是没有问题的...)

 

SQL> alter database create standby controlfile as '/tmp/a.ctl' reuse;
alter database create standby controlfile as '/tmp/a.ctl' reuse
*
ERROR at line 1:
ORA-15124: ASM file name '+data/odsptdb+DATAfile/system.259.862837403' containsan invalid alias name

对以上加粗部分的字符串是哪里来的表示非常有疑问!

最终,检查DB_FILE_NAME_CONVERT参数的配置,并且做了以下试验:

SQL> alter session set db_file_name_convert='/data','+abc';
------------------------------------------------------------------------/\\\\\\\\\
Session altered.

SQL> alter database create standby controlfile as '/tmp/a.ctl' reuse;
alter database create standby controlfile as '/tmp/a.ctl' reuse
*
ERROR at line 1:
ORA-15124: ASM file name '+data/odsptdb+abcfile/system.259.862837403' containsan invalid alias name
----------------------------------------------------------/\\\\\\\\\\

SQL> alter session set db_file_name_convert='/data','abc+abc';
-------------------------------------------------------------------------////\\\\
Session altered.

SQL> alter database create standby controlfile as '/tmp/a.ctl' reuse;
alter database create standby controlfile as '/tmp/a.ctl' reuse
*
ERROR at line 1:
ORA-15124: ASM file name '+data/odsptdbabc+abcfile/system.259.862837403' contains an invalid alias name
-------------------------------------------------------------////\\\\

 

SQL> alter session set db_file_name_convert='/data','abc';

Session altered.

SQL> alter database create standby controlfile as '/tmp/a.ctl' reuse;

Database altered.

 

从以上几个试验可以看出,DB_FILE_NAME_CONVERT确实影响了standby controlfile的创建。而且串里不能包含“+” (即加号)

在以往的RAC+ASM中,印象里面DB_FILE_NAME_CONVERT和LOG_FILE_NAME_CONVERT参数是可以有“+” (即加号)的,这一次遇到了很奇怪的问题。计划找个时间窗口,将以上两个参数后半部分都改为"+DATA",完全让ASM来管理。

特意在此记录一下。

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
MySQL: BLOB and other no-sql storage, what are the differences?MySQL: BLOB and other no-sql storage, what are the differences?May 13, 2025 am 12:14 AM

MySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand

MySQL Add User: Syntax, Options, and Security Best PracticesMySQL Add User: Syntax, Options, and Security Best PracticesMay 13, 2025 am 12:12 AM

ToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith

MySQL: How to avoid String Data Types common mistakes?MySQL: How to avoid String Data Types common mistakes?May 13, 2025 am 12:09 AM

ToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters

MySQL: String Data Types and ENUMs?MySQL: String Data Types and ENUMs?May 13, 2025 am 12:05 AM

MySQloffersechar, Varchar, text, Anddenumforstringdata.usecharforfixed-Lengthstrings, VarcharerForvariable-Length, text forlarger text, AndenumforenforcingdataAntegritywithaetofvalues.

MySQL BLOB: how to optimize BLOBs requestsMySQL BLOB: how to optimize BLOBs requestsMay 13, 2025 am 12:03 AM

Optimizing MySQLBLOB requests can be done through the following strategies: 1. Reduce the frequency of BLOB query, use independent requests or delay loading; 2. Select the appropriate BLOB type (such as TINYBLOB); 3. Separate the BLOB data into separate tables; 4. Compress the BLOB data at the application layer; 5. Index the BLOB metadata. These methods can effectively improve performance by combining monitoring, caching and data sharding in actual applications.

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.

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

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

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.