Latest Blog Posts

Virtual Box Additions Fails

Virtual Box Additions Fails cd /etc/yum.repos.d wget http://public-yum.oracle.com/public-yum-ol6.repo yum update # make sure these guys are installed yum install gcc yum install kernel-uek-devel # yes you have to reboot – or it’s not gonna pick all this up reboot re-run the VBoxAdditions process

Add space to a dynamic virtual hard drive with VirtualBox with a RHEL/CentOS/OEL 6 VM

This blog assumes your VM is RHEL or clone of RHEL using the logical volume manager – if you are not using LVM – this approach will not work. To start with expand the virtual drive from the command line (Windows in the example). VBoxManage modifyhd <absolute path to file> –resize <size in MB> For…

Oracle 12c Create a Pluggable Container DB From Seed & Changing Containers

# Creating a pluggable container from the seed container pdb$seed # First create a data sub-directory under the root container cdb$root data directory as follows (your path may vary to your oradata dir): # while logged in as the oracle / Linux user that admins the 12c database cd /u01/app/oracle/product/12.1.0.2/oradata/orcl mkdir pdbmf11g cd pdbmf11g #…

Oracle 12c Show Which Containers All Users Are In And Which Container You Are Currently In

When connect to the root container CDB$ROOT: select c.name container, u.username username from v$containers c, cdb_users u where c.con_id=u.con_id order by c.name; Just in case you are not certain which container you are currently connected to from sqlplus or sqldeveloper etc: show con_name CDB$ROOT