使用Backup创建测试环境之后,发现testdb的Log File过大,达到400GB,由于测试环境实际上不需要这么大的Log Space,占用400GB的Disk Space实在浪费Disk Resource,于是使用DBCC Shrink收缩Log File: ,notruncate) ,truncateonly) 命名执行完成之后,发现还有300多GB,实际Log File占用的空间的百分比十分低,0.000428% DBCC SQLPERF(LOGSPACE) 由于test db的还原…

SharePoint Config database logs are one thing to keep an eye on since they do have a tendency to grow. If you don’t perform a full farm backup usually the log doesn’t get emptied and it just keeps bloating. If you’re running SQL Server Express with d…

setup slave from backup i got error Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file' MASTER MariaDB [(none)]> SHOW BINLOG EVENTS IN 'mysqld-bin.140180' FROM 101070557 LI…

Q: innodb log file与binlog的区别在哪里?有人说1.mysql的innodb引擎实际上是包装了inno base存储引擎.而innodb log file是由 inno base自身带来. 而mysql自身因为还有myisam等存储引擎,需要设置自己的日志文件来用于所有的存储引擎记录日志信 息,因此增加了binlog.从某种意义上说binlog对于innodb存储引擎来说与innodb log是有些重复的.2.binlog应该是mysql真正的redo日志 A: 1. bi…

log file parallel write概念介绍 log file parallel write 事件是LGWR进程专属的等待事件,发生在LGWR将日志缓冲区(log_buffer)中的重做日志信息写入联机重做日志文件组的成员文件,LGWR在该事件上等待该写入过程的完成.该事件的等待表示重做日志所处的磁盘设备缓慢或存在争用.下面看看官方一些资料是如何解释log file parallel write等待事件的. log file parallel write   Writing redo…

前两天电脑中毒, 病毒好像把mysql的 log.err 文件给删掉了.然后服务一直启动不了:Could not open error log file errno 2. 然后疯狂百度,搜索的结果大多都不是我这种情况,只有很少一部分和我的情况一样. 出现和我相同情况的同学: mysql启动错误之 Can't init tc log  Failed to open log (file '', errno 2) ... 发现他们的方法并不能解决我的问题〒_〒,忙活了一上午还是没有找到解决办法. 没有…

mariadb 启动中 InnoDB: Error: log file ./ib_logfile0 is of different size 0 起因:线上正在运行的系统,因为需要调整性能,变更了my.cnf参数的innodb_log_file_size大小,重启MySQL时err日志输出如下InnoDB: Error: log file ./ib_logfile0 is of different size 0 xxxx bytes 停掉mariadb 解决办法:移除原有ib_logfile#m…

启动nginx报如下错误: nginx: [alert] could not open error log file: open() "/usr/local/nginx/logs/error.log" failed (13:Permission denied) 2014/08/04 20:35:45 [emerg] 17114#0: open() "/usr/local/nginx/logs/access.log" failed (13: Permission de…

Managing IIS Log File Storage   You can manage the amount of server disk space that Internet Information Services (IIS) log files consume by using compression, remote storage, scripted deletion, and an IIS Log Cleaner Tool. Overview The log files tha…

看代码随手记:log_put.c, __log_write() /* * If we're writing the first block in a log file on a filesystem that * guarantees unwritten blocks are zero-filled, we set the size of the * file in advance. This increases sync performance on some systems, * becau…