Show host from OS disk
-> ls /sys/class/scsi_host/
host0 host1 host2
Scan for each host
-> echo “- — -” > /sys/class/scsi_host/host0/scan
-> echo “- — -” > /sys/class/scsi_host/host1/scan
-> echo “- — -” > /sys/class/scsi_host/host2/scan
lsblk will show the new disk
1. Login to oracle command line
2. follow this command “SQL> @$ORACLE_HOME/rdbms/admin/awrrpt.sql”
enter value, default is html
enter num_days, default is 1
enter value for begin snap and value for end_snap
enter report name
3. use command “pwd!” to see report location directory
run this magic command
swapoff -a; sudo swapon -a
Be careful doing this, as you may make your system unstable, especially if its already low on RAM.
Example : python multiple process and cannot select python process to kill
Run this magic comand :
ps -ef | grep “python3.6” | awk ‘{print $2}’ | xargs kill
#pvcreate /dev/sdb2 (new disk name)
#vgdisplay (check name disk vg)
# vgextend vg_dbmonit /dev/sdb2
# pvscan
# lvextend /dev/vg_dbmonit/Log_rot /dev/sdb2
# resize2fs /dev/vg_dbmonit/Log_rot
note : centos 7 resize2fs change to xfs_growfs
Originally published at https://jahtragenio.blogspot.com on April 2, 2021.
Simply way, exec this command.
date — set=”$(ssh user@ip date)”
Enjoy 👍
Run this magic command
“swapoff -a; sudo swapon -a”
Be careful doing this, as you may make your system unstable, especially if its already low on RAM.
1. Masuk server dengan menggunakan live CD yang sesuai dengan versi existing
2. Masuk ke dalam rescue mode dan install rescue mode
3. Jika sudah masuk ke dalam shell command masukan perintah chroot /mnt/sysimage/ kemudian df -h untuk memastikan partisinya aman
4. Masukan perintah grub-install /dev/sda1 kemudian restart via vcenter
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