Monthly Archives: December 2019

dbnodeupdate.sh appears to be stuck

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I was patching an Exadata db node from 18.1.5.0.0.180506 to 19.3.2.0.0.191119. It had been more than an hour and dbnodeupdate.sh appeared to be stuck. Trying to ssh to the node was giving “connection refused” and the console had this output (some output removed for brevity):

[  458.006444] upgrade[8876]: [642/676] (72%) installing exadata-sun-computenode-19.3.2.0.0.191119-1...
<>
[  459.991449] upgrade[8876]: Created symlink /etc/systemd/system/multi-user.target.wants/exadata-iscsi-reconcile.service, pointing to /etc/systemd/system/exadata-iscsi-reconcile.service.
[  460.011466] upgrade[8876]: Looking for unit files in (higher priority first):
[  460.021436] upgrade[8876]: /etc/systemd/system
[  460.028479] upgrade[8876]: /run/systemd/system
[  460.035431] upgrade[8876]: /usr/local/lib/systemd/system
[  460.042429] upgrade[8876]: /usr/lib/systemd/system
[  460.049457] upgrade[8876]: Looking for SysV init scripts in:
[  460.057474] upgrade[8876]: /etc/rc.d/init.d
[  460.064430] upgrade[8876]: Looking for SysV rcN.d links in:
[  460.071445] upgrade[8876]: /etc/rc.d
[  460.076454] upgrade[8876]: Looking for unit files in (higher priority first):
[  460.086461] upgrade[8876]: /etc/systemd/system
[  460.093435] upgrade[8876]: /run/systemd/system
[  460.100433] upgrade[8876]: /usr/local/lib/systemd/system
[  460.107474] upgrade[8876]: /usr/lib/systemd/system
[  460.114432] upgrade[8876]: Looking for SysV init scripts in:
[  460.122455] upgrade[8876]: /etc/rc.d/init.d
[  460.129458] upgrade[8876]: Looking for SysV rcN.d links in:
[  460.136468] upgrade[8876]: /etc/rc.d
[  460.141451] upgrade[8876]: Created symlink /etc/systemd/system/multi-user.target.wants/exadata-multipathmon.service, pointing to /etc/systemd/system/exadata-multipathmon.service.

There was not much that I could do so just waited. Also created an SR with Oracle Support and they also suggested to wait. It started moving after some time and completed successfully. Finally when the node came up, i checked that there was an NFS mount entry in /etc/rc.local and that was what created the problem. For the second node, we commented this out and it was all smooth. Important to comment out all NFS entries during patching to avoid all such issues. I had commented the ones in /etc/fstab but the one in rc.local was an unexpected one.

AVDF installation error

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I was installing Database Firewall version 12.2.0.11.0 on a Dell x86 machine (with 5 * 500 GB local HDDs configured in RAID 10) and it got successfully installed. Later on, I came to know that this version doesn’t support host monitor functionality on Windows hosts. The latest version that supports that is 12.2.0.10.0. So that was the time to download and install 12.2.0.10.0. The installation started fine but it failed with an error:

Exception occured

anaconda 13.21.263 exception report

File "/usr/lib/anaconda/storage/devices.py",

OSError: [Errno 2] No such file or directory:
'/dev/sr0'

From the script that it is calling i.e. device.py, I guessed it had something to do with the storage. Maybe it was not able to figure out something that was created by the latest version installation. So I removed the RAID configuration and created it again. After this the installation went through without any issues.