(一)问题 在使用MySQL数据库binlog日志基于时间点恢复数据库时,我们必须要指定binlog的开始位置和结束位置,而在MongoDB里面,如果使用oplog进行恢复,只有oplogLimit参数,该参数信息如下 --oplogLimit=<seconds>[:ordinal] only include oplog entries before the provided Timestamp oplogLimit参数定义了数据库恢复到该时间点.也就是说,MongoDB只是设置了oplog的
[Oracle][Standby][PDB]在PDB中修改参数,设置范围为 SPFILE,报 ORA-65099错误 在Data Gaurd 的 Standby (或 CDB 是 Read Only )中,在PDB下,执行如下SQL 出错: SQL> ALTER SYSTEM SET SGA_TARGET = 800 M SCOPE = SPFILE;ALTER SYSTEM SET SGA_TARGET = 800 M SCOPE = SPFILE*An error occurred on l
内核参数SEMMSL SEMMNS SEMOPM SEMMNI参数的设置 转自:http://www.dbafree.net/?p=92 这四个参数自己一直没搞清楚 今天问了下同事,大概整了一下,后面会再补充. 以下是linux文档上的说明: /proc/sys/kernel/sem (since Linux 2.4) This file contains 4 numbers defining limits for System V IPC semaphores. These field
报错: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with exi
自己的项目中,只需要修改: CameraManager 里面的 MAX_FRAME_WIDTH .MAX_FRAME_HEIGHT 的值 private static final int MIN_FRAME_WIDTH = 10; private static final int MIN_FRAME_HEIGHT = 10; private static final int MAX_FRAME_WIDTH = 800; private static final int MAX_FRAME_HEI