有网友在QQ上找我,说Oracle 7.3的数据库,因为redo异常咨询我是否可以恢复 检查数据库得到以下信息 SVRMGR select * from v$version;BANNER----------------------------------------------------------------Oracle7 Workgroup Server Release 7.3.2.2.1 - P
有网友在QQ上找我,说Oracle 7.3的数据库,因为redo异常咨询我是否可以恢复
检查数据库得到以下信息
SVRMGR> select * from v$version; BANNER ---------------------------------------------------------------- Oracle7 Workgroup Server Release 7.3.2.2.1 - Production Release PL/SQL Release 2.3.2.2.0 - Production CORE Version 3.5.2.0.0 - Production TNS for 32-bit Windows: Version 2.3.2.1.0 - Production NLSRTL Version 3.2.2.0.0 - Production 已选择 5 行
数据文件信息
redo信息

跳过redo进行恢复,在resetlogs过程中报rbs表空间坏块,然后通过dul工具获得回滚段名称,然后使用隐含参数屏蔽掉
License high water mark = 2 Starting up ORACLE RDBMS Version: 7.3.2.2.1. System parameters with non-default values: processes = 800 shared_pool_size = 540000000 control_files = D:\ORANT\DATABASE\ctl1orcl.ora, D:\ORANT\DATABASE\ctl2orcl.ora compatible = 7.3.0.0.0 log_buffer = 327680 log_checkpoint_interval = 1000000 db_files = 40 db_file_simultaneous_writes= 1280 max_rollback_segments = 12800 _offline_rollback_segments= RB13, RB14, RB15, RB16, RB20 _corrupted_rollback_segments= RB13, RB14, RB15, RB16, RB20 sequence_cache_entries = 100 sequence_cache_hash_buckets= 100 remote_login_passwordfile= SHARED mts_servers = 0 mts_max_servers = 0 mts_max_dispatchers = 0 audit_trail = NONE sort_area_retained_size = 65536 sort_direct_writes = AUTO db_name = oracle open_cursors = 800 text_enable = TRUE snapshot_refresh_processes= 1 background_dump_dest = %RDBMS73%\trace user_dump_dest = %RDBMS73%\trace Mon Jun 16 16:46:57 2014 PMON started Mon Jun 16 16:46:57 2014 DBWR started Mon Jun 16 16:46:57 2014 LGWR started Mon Jun 16 16:46:57 2014 RECO started Mon Jun 16 16:46:57 2014 SNP0 started Mon Jun 16 16:46:57 2014 alter database mount exclusive Mon Jun 16 16:46:58 2014 Successful mount of redo thread 1. Mon Jun 16 16:46:58 2014 Completed: alter database mount exclusive Mon Jun 16 16:48:15 2014 alter database open Mon Jun 16 16:48:16 2014 Beginning crash recovery of 1 threads Crash recovery completed successfully Mon Jun 16 16:48:17 2014 Thread 1 advanced to log sequence 9 Current log# 1 seq# 9 mem# 0: D:\ORANT\DATABASE\LOG2ORCL.ORA Thread 1 opened at log sequence 9 Current log# 1 seq# 9 mem# 0: D:\ORANT\DATABASE\LOG2ORCL.ORA Successful open of redo thread 1. Mon Jun 16 16:48:18 2014 SMON: enabling cache recovery Mon Jun 16 16:48:19 2014 Completed: alter database open Mon Jun 16 16:48:20 2014 SMON: enabling tx recovery SMON: about to recover undo segment 14 SMON: mark undo segment 14 as needs recovery SMON: about to recover undo segment 15 SMON: mark undo segment 15 as needs recovery SMON: about to recover undo segment 16 SMON: mark undo segment 16 as needs recovery SMON: about to recover undo segment 17 SMON: mark undo segment 17 as needs recovery SMON: about to recover undo segment 18 SMON: mark undo segment 18 as needs recovery Mon Jun 16 16:48:20 2014 Errors in file D:\ORANT\RDBMS73\trace\orclSMON.TRC: ORA-00600: internal error code, arguments: [4306], [21], [2], [], [], [], [], []
数据库在启动过程中出现ORA-00600[4306],导致smon异常。该错误是因为在数据库open过程中smon会清理临时段从而出现该错误,通过设置event跳过,数据库算整体打开,不过在恢复过程中还遇到了
Mon Jun 16 17:53:10 2014 Errors in file D:\ORANT\RDBMS73\trace\orclDBWR.TRC: ORA-00600: internal error code, arguments: [3600], [3], [14], [], [], [], [], [] Mon Jun 16 18:05:12 2014 Errors in file D:\ORANT\RDBMS73\trace\ORA06880.TRC: ORA-01578: ORACLE数据块有错(文件号12, 块号46644) ORA-01110: 文件'12'没有联机 ORA-00600: 内部错误码, 变元: [4194], [18], [5], [], [], [] ORA-00600: 内部错误码, 变元: [4194], [18], [5], [], [], []
ORA-00600[3600]是因为在offline 回滚段所在表空间锁出现的问题
ORA-00600[4194]是因为回滚段所在的表空间数据文件出现坏块所导致
- undo异常处理步骤(9i)
- ORA-00600[kcrf_resilver_log_1]异常恢复
- ORACLE 8.1.7 数据库ORA-600 4194故障恢复
- 某集团ebs数据库redo undo丢失导致悲剧
- 深入分析一次ORA-00314错误
- 记录一次ORA-600 3004 恢复过程和处理思路
- Oracle安全警示录:加错裸设备导致redo异常
- ORA-00600[kcratr1_lostwrt]/ORA-00600[3020]错误恢复
原文地址:数据库恢复历史再次刷新到Oracle 7.3.2版本—redo异常恢复, 感谢原作者分享。

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.

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 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 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 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 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.

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.

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


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