可能的原因 control file sequential read Reading from the control file. This happens in many cases. For example, while: 1、Making a backup of the control ...
High waits on control file sequential read 文档 ID . In case we run into an issue where control file sequential read is the top event on the AWR report and we cannot see I O issues on tablespace stats. ...
2017-12-31 22:20 0 1232 推荐指数:
可能的原因 control file sequential read Reading from the control file. This happens in many cases. For example, while: 1、Making a backup of the control ...
1、产生原因 db file sequential read这个是非常常见的I/O 相关的等待事件。表示发生了与索引扫描相关的等待。意味着I/O 出现了问题,通常表示I/O竞争或者I/O 需求太多。 db file parallel read这个事件表明会话正在并行执行多个读取的需求 ...
ORA-01665错误处理 问题描述: 在备库启动至mount状态时,报如下错误: ORA-01665: control file is not a standby control file 解决办法: 在主库备份一个控制文件 SQL> alter database ...
dg备库在凌晨突然挂掉。导致主备同步不实时,堆积了很多归档日志。 查看mrp进程,发现一个都没有了 尝试拉起mrp进程,发现报错ora-01665 查Mos说是 ...
点击返回:自学Zabbix之路 点击返回:自学Zabbix4.0之路 点击返回:自学zabbix集锦 Zabbix4.4.1系统告警“sda: Disk read/write request response are too high” 针对告警查询zabbix系统默认设置 ...
通过spark2.3 sparksql saveAsTable()执行写数据到hive,sparksql写数据到hive时候,默认是保存为parquet+snappy的数据。在数据 ...
“df: cannot read table of mounted file systems”.“df -l” returned an error: “df: cannot read table of mounted file systems”. I looked at my “/etc/mtab ...
在网上找的资料都不怎么好使,许多代码一看就知道根本没有考虑全面。 最后找到一个好用的,在codeproject上,这位老兄写成了一个framework,太重了。 http://www.codep ...