Database & Cloud – Page 7 – Finding the right solutions

How to resolve inaccessible disc images in VirtualBox?

Sometimes when I moved or deleted some operating system installation discs, I found I could not release it in the VirtualBox, even I had detached it from all the Virtual Machines.So it was a littl...

25/04/2018259 viewsComments

ORA-29382 or ORA-06512 during database upgrade from 11.1 to 12.1

Last year, when I was migrating/upgrading a huge Oracle database from 11.1 to 12.1, I encountered one really tough issue and I found the reason after several months.The error messages were like th...

18/04/2018Oracle1,616 viewsComments

host map: lookup (domain.com): deferred

This was another issue happened several days ago.In our email configuration, there was one central email server to sent email out and all other servers transferred email to this central email serv...

17/04/2018Linux1,922 viewsComments

IP name possibly forged

These days got a sendmail issue and fixed it after some research and tests, and I though it could be shared here.The primary email server was 192.168.3.40 and was used as relay server to send emai...

16/04/2018Linux306 viewsComments

Is the RAID5 array right choice for home use?

I know the RAID5 is one of the most popular raid types in the enterprise market and I saw it in lots of configurations, so I also selected it for my own small array.One day I read one viewpoint th...

27/03/2018Life156 viewsComments

fatal: DH_GEX_REQUEST, bad parameters: 2048 !< 1024 !< 8192

These days got an issue that some AIX servers could not access one Linux server: ------@------:/home/------/.ssh$ssh 192.168.3.66 Connection closed by 192.168.3.66 (I removed the hostname and usern...

24/03/2018Linux1,132 viewsComments

not syncing: Attempted to kill init

Several days ago, I run 'yum update' while failed: error: Couldn't fork %pre(php71u-fpm-7.1.14-1.ius.centos6.x86_64): Cannot allocate memory Error in PREIN scriptlet in rpm package php71u-fpm-7.1.14...

16/03/2018Linux262 viewsComments

Fix issue of “recipe for target ‘checksum_target’ failed”

Do not know when I began to get this issue: root@debian:~/spksrc/spk/transmission# make arch-armada38x-5.2 ===> Building package for arch armada38x-5.2 make[1]: Entering directory '/root/spksrc...

04/03/2018Life280 viewsComments

Patch file for skipping verification feature of Transmission 2.93

Some friends wanted me to merge the skipping verification feature to the new Transmission, and I found the original codes here:transmission-2.92_skiphashcheckBased on these codes I made a patc...

02/03/2018Life214 viewsComments

Fix the UPnP issue in double NAT environment

After several days research, I fixed the UPnP issue in my own network environment.Let me introduce my network environment first so you will know why I have to fix this issue.I share the same h...

27/02/20181,909 viewsComments

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