Database & Cloud – Finding the right solutions

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It is a really easy task while I cannot find a complete command list to finish it, so I list the commands here to help others having similar request. yum install -y yum-utils device-mapper-persistent...

16/08/2023Linux0 viewsComments

Downgrade the Jenkins to a lower version

Several weeks ago, One of our guys pressed the 'Upgrade' button of Jenkins, and after that it could not work any more.Of course he should not do this as he totally did not know the result, while I...

08/08/2023Linux0 viewsComments

Migrate OS from CentOS to Ubuntu

I have used CentOS for years and now I have to consider to master Ubuntu. Most commands could be found on both OS and they do share lots of concepts, while there are some differences and even I cannot...

14/11/2022Life23 viewsComments

Let the ssh-agent choose the right key for different GitHub accounts

I tried to clone several repositories in two different GitHub accounts and I found even such simple task took me several hours and the main issue was that the ssh-agent always provided the cached keys...

06/11/2021Program126 viewsComments

Could I ignore the SID clause in command ‘alter system’?

When we change the parameters in the RAC systems, I always recommend to specify the SID clause clearly, which means you know which or all instances will be modified.If you ignore it, the result wi...

26/08/2021Oracle275 viewsComments

Create Kubernetes 1.21.0 on Ubuntu 18.04

These days I created a K8s 1.21.0 cluster on Ubuntu 18.04 to prepare the CKA exam, and found there are some tips which could be shared here.To make it simple, the cluster is based on CRI-O contain...

07/08/2021Kubernetes1,358 viewsComments

Fix the oxc000007b error on windows 10

My nephew installed Battlefield 1 on his laptop while he always got 'oxc000007b' error when he launched it. Usually I would like not to deal with personal Windows machines as a variety of software cou...

09/07/2021Windows253 viewsComments

How to recreate the lost ASM password in Oracle Clusterware?

Last night my friend called me to check the network service issue after she added two SCAN IPs to one RAC system.She added these two IPs to resolve load balance issue as the customer found the con...

04/07/2021Oracle1,554 viewsComments

How to fix permission issues of Oracle RAC?

In last month, one engineer of our customers made a mistake and changed the file permissions of the whole RAC database wrongly, including GI and DB home.Of course the clusterware could not be star...

10/11/2020Oracle5,811 viewsComments

Print spooler failed to start with error 0x800706b9

Could not believe it took me more than 3 hours to just install a printer!Just now helped one relative to install HP printer on Sureface and always failed. At the beginning the driver could not be ...

18/08/2020Life196 viewsComments

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