InnoDB: The log sequence number in ibdata files does not matchInnoDB的:在ibdata文件的日志序列号不匹配 可能ibdata文件损坏了解决办法如下:在my.cny 的[mysqld]中加入 # Size of each log file in a log group. You should set the combined size      # of log files to about 25%-100% of your b…

mysql oom之后,重启时发生130517 16:00:10 InnoDB: Error: page 447 log sequence number 292344272InnoDB: is in the future! Current system log sequence number 1595916.InnoDB: Your database may be corrupt or you may have copied the InnoDBInnoDB: tablespace but no…

有时候,你会在ORACLE数据库的告警日志中发现"Thread <number> cannot allocate new log, sequence <number>  Checkpoint not complete"这类告警.具体案例如下所示: Thread 1 cannot allocate new log, sequence 279334 Checkpoint not complete Current log# 4 seq# 279333 mem# 0:…

前言 InnoDB 有两块非常重要的日志,一个是undo log,另外一个是redo log,前者用来保证事务的原子性以及InnoDB的MVCC,后者用来保证事务的持久性. 和大多数关系型数据库一样,InnoDB记录了对数据文件的物理更改,并保证总是日志先行,也就是所谓的WAL,即在持久化数据文件前,保证之前的redo日志已经写到磁盘. LSN(log sequence number) 用于记录日志序号,它是一个不断递增的 unsigned long long 类型整数.在 InnoDB 的日志…

昨天一台SQL Server 2008R2的数据库在凌晨5点多抛出下面告警信息: The log scan number (620023:3702:1) passed to log scan in database 'xxxx' is not valid. This error may indicate data corruption or that the log file (.ldf) does not match the data file (.mdf). If this error oc…

14.7.2 Changing the Number or Size of InnoDB Redo Log Files 改变InnoDB Redo Log Files的数量和大小 改变 InnoDB redo log 文件的数量和大小在MySQL 5.6.7或者更早版本,执行下面步骤: 1.如果 innodb_fast_shutdown is set to 2, set innodb_fast_shutdown to 1: mysql> show variables like '%innodb_…

14.5.2 Changing the Number or Size of InnoDB Redo Log Files 改变InnoDB Redo Log Files的数量 改变InnoDB redo log files的数量 在MySQL 5.6.7或者更早版本,执行下面步骤: 1.如果 innodb_fast_shutdown设置为2,set innodb_fast_shutdown to 1: mysql> show variables like '%innodb_fast_shutdow…

相较于Oracle的在线调整redo日志的数目和大小,mysql这点则有所欠缺,即使目前的mysql80版本,也不能对innodb redo日志的数目和大小进行在线调整,下面仅就mysql调整innodb redo log files数目和大小的具体方法和步骤进行说明.1. 停止mysql服务器,并确信对其进行了正常关闭:2. 编辑my.cnf 文件以对其中的redo log file相关配置进行调整. 为了改变redo log file的大小,需对选项innodb_log_file_size进…

InnoDB: Operating system error number 87 in a file operation. 错误87的解决方法 140628  8:10:48 [Note] Plugin 'FEDERATED' is disabled.140628  8:10:48 InnoDB: The InnoDB memory heap is disabled140628  8:10:48 InnoDB: Mutexes and rw_locks use Windows interlock…

报错信息: Thread 1 cannot allocate new log, sequence 187398Checkpoint not complete 处理方法: 查看REDO日志组 select group#,member from v$logfile; select group#,sequence#,bytes,members,status from v$log; 查看每组日志的状态 alter database add logfile group 4 ('/opt/oradata/o…