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 文檔 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 推薦指數:
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、產生原因 db file sequential read這個是非常常見的I/O 相關的等待事件。表示發生了與索引掃描相關的等待。意味着I/O 出現了問題,通常表示I/O競爭或者I/O 需求太多。 db file parallel read這個事件表明會話正在並行執行多個讀取的需求 ...
ORA-01665錯誤處理 問題描述: 在備庫啟動至mount狀態時,報如下錯誤: ORA-01665: control file is not a standby control file 解決辦法: 在主庫備份一個控制文件 SQL> alter database ...
dg備庫在凌晨突然掛掉。導致主備同步不實時,堆積了很多歸檔日志。 查看mrp進程,發現一個都沒有了 嘗試拉起mrp進程,發現報錯ora-01665 查Mos說是 ...
點擊返回:自學Zabbix之路 點擊返回:自學Zabbix4.0之路 點擊返回:自學zabbix集錦 Zabbix4.4.1系統告警“sda: Disk read/write request response are too high” 針對告警查詢zabbix系統默認設置 ...
通過spark2.3 sparksql saveAsTable()執行寫數據到hive,sparksql寫數據到hive時候,默認是保存為parquet+snappy的數據。在數據 ...
“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 ...
在網上找的資料都不怎么好使,許多代碼一看就知道根本沒有考慮全面。 最后找到一個好用的,在codeproject上,這位老兄寫成了一個framework,太重了。 http://www.codep ...