New version of set_exadata_passwords.sh

A new version of set_exadata_passwords.sh is available on GitHub. With new options and a bugfix for infiniband switches. Continue reading “New version of set_exadata_passwords.sh”

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chpasswd not working after upgrade

After the upgrade of a infiniband switch from version 2.1.5-1 to 2.2.6-2 my script set_exadata_passwords.sh was not working anymore. It can’t change the password of the infiniband switches because the command chpasswd threw the following error:

[root@my_ib ~]# echo "root:MY_NEW_PW" |chpasswd -c SHA512
chpasswd: cannot open /etc/passwd

In the blog I’ll explain why it’s not working, how I found the root cause and a workaround.

Continue reading “chpasswd not working after upgrade”

Exadata storage reconfiguration with empty DGs

Changing the size of your disk groups (DG) is quite easy if the disk groups are empty. if the total amount of space used in all DGs is less then the smallest DG it’s possible to change the size. it’s like playing towers of Hanoi, you must move your data several times. This is not described here. Here you find instructions to change the size with empty DGs. Continue reading “Exadata storage reconfiguration with empty DGs”