Preface I've stuck twice in my previous experiments in backing up dropped tables.I am still not sure that why I got failure yesterday.Therefore,I decide to do that again with the same steps on another environment.Let's see the details. Proc…
Preface In my previous blogs,I've demonstrated several mothods of how to rescue a dropped table(or truncated table as well). full mysqldump backup + binlog on master(master was normally running) full Xtrabackup backup + binlog on mast…
一.表和数据恢复 1.从回收站里查询被删除的表 select object_name,original_name,partition_name,type,ts_name,createtime,droptime from recyclebin; 2.执行表的恢复语句 flashback table tableName to before drop; tableName需要恢复的表名…
昨天看到袁哥微博,看到了这篇,今天测试了一下,记录下来: The DNS Client service does not log by default. However, if a file named %systemroot%\system32\dnsrslvr.log is manually created, this file is used by the service to log debug information: C:\WINDOWS\system32\>echo "&qu…
对于误删除表空间的恢复,本文通过基于数据库的时间点恢复和基于表空间的时间点恢复分别加以讨论 一 通过基于数据库的时间点恢复被误删除的表空间 1 需要注意的事项 a 基于数据库的时间点恢复将会回退整个数据库. b 误删除表空间,当数据库有之前可用于恢复的全库备份和相关归档,如果对数据库执行不完全恢复,恢复该数据库到删除表空间之前的状态,便可恢复误删除的表空间.但实际上当我们删除表空间,数据库备份中将不存在关于该表空间的的信息,直接进行恢复将会出现问题.如下所示: RMAN> list backup…
1.恢复存储过程 原理就是利用了oracle里所有的存储过程的源代码都是存在dba_source里,而drop某个存储过程的时候,oracle这里肯定要去dba_source里把相关的源代码给delete掉,既然是delete,那就好办咯,直接flashback query就可以了.如下: select * from dba_source as of timestamp to_timestamp('2010-06-11 10:59:00', 'YYYY-MM-DD HH24:MI:SS') wh…
前言:MySQL进行主主复制或主从复制的时候会在配置文件制定的目录下面产生相应的relay log,本文档总结这些相关参数的定义及解释. 1.什么是relay log The relay log, like the binary log, consists of a set of numbered files containing events that describe database changes, and an index file that contains the names of…
安卓系统比起ios系统最大的缺点,相信大家都知道,就是系统安全问题.这篇博客就秀一波“黑科技”. 读取用户短信 Android应用能读取用户手机上的短信,相信已经不是什么新鲜事,比如我们收到的短信验证码,一些app马上就能自动获取并填上验证码,省去我们手动填写验证码.原理就是通过Android的ContentProvider组件间接访问系统的短信数据库,获取所有短信内容.下面来演示一下. 布局很简单,如下: 代码如下: public class MainActivity extends Acti…
今天在使用冷备份文件重做从库时遇到一个报错,值得研究一下. 版本:MySQL5.6.27 一.报错现象 dba:(none)> start slave; ERROR (HY000): Slave failed to initialize relay log info structure from the repository 这个时候查看error.log: 2017-07-17 16:19:02 9022 [ERROR] Failed to open the relay log './tjtx…
今天在使用冷备份文件重做从库时遇到一个报错,值得研究一下. 版本:MySQL5.6.27 一.报错现象 dba:(none)> start slave; ERROR (HY000): Slave failed to initialize relay log info structure from the repository 这个时候查看error.log: 2017-07-17 16:19:02 9022 [ERROR] Failed to open the relay log './tjtx…
FZU 2105 Digits Count Time Limit:10000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Practice Description Given N integers A={A[0],A[1],...,A[N-1]}. Here we have some operations: Operation 1: AND opn L R Here opn, L and R are intege…
备库报错: Last_SQL_Errno: 1594 Last_SQL_Error: Relay log read failure: Could not parse relay log event entry. The possible reasons are: the master's binary log is corrupted (you can check this by running 'mysqlbinlog' on the binary log), the slave's rela…
salve复制线程停止,尝试start slave 时报ERROR 1872错误mysql> system perror 1872 MySQL error code 1872 (ER_SLAVE_RLI_INIT_REPOSITORY): Slave failed to initialize relay log info structure from the repository解决过程1.看样子是找不到中继日志的仓库,但是查看变量relay log的位置是设置了的mysql> show va…
