- 2024-07-26mysql 优化
##计算shmall和shmmax值memTotal=$(grepMemTotal/proc/meminfo|awk'{print$2}')totalMemory=$((memTotal/2048))shmall=$((memTotal/4))if[$shmall-lt2097152];thenshmall=2097152fishmmax=$((memTotal*1024-1))if["$shmmax"-lt429
- 2023-02-05rac环境系统参数
概述RAC环境,内网心跳经常不通,RAC经常宕机解决方案针对oracle的RAC环境,linux内核需要特别优化的参数如下:#setnewnet.ipv4.conf.eno3.rp_filter=2net.ipv4.conf.bond0
- 2023-01-04Troubleshooting gc block lost and Poor Network Performance in a RAC Environment
Environment:OracleLinuxRedHatLinuxOracle11GOracle12CSymptoms:Highclusterwaitandperformancelossduetoclusterwait.Diagnose:[root@node2
- 2022-10-28Oracle RAC调整网卡MTU值
---原文https://cloud.tencent.com/developer/article/1658019在OracleRAC的环境中,如果我们发现OSW监控数据显示包重组失败率过高,就需要引起足够的重视,因为这很可能会引