The other day while writing up the blog post How to install Oracle Database 18c XE on Linux 8 I stumbled across the question of how to list all the dependencies of a rpm package on Linux 8. The solution was easier than I thought but required some googling, so here is it for easy reference:
Continue reading “How to list dependencies of a rpm package via dnf”
dnf command provides a nice little sub command called
repoquery which is equivalent to
rpm -q and to the
repoquery command provided by
yum-utils on Linux 7. It’s quite a powerful little command which is reflected by the long list of parameters it takes. You can check for yourself by just typing
dnf repoquery --help. One of these parameters is
--requires which allows you to, as the documentation puts it “Display capabilities that the package depends on.“
It has been more than two and a half years since Oracle 18c XE has been released for Linux. Since then things have changed and one of these changes was the release of Linux 8 about nine months later. Unfortunately, installing Oracle 18c XE on Linux 8 is no longer quite as straightforward as it was with Linux 7 – a simple
yum command. That is because the
oracle-database-preinstall-18c is not provided for Linux 8. However, installing Oracle 18c XE on Linux 8 is still possible, it just requires a few more keystrokes.
Execute all commands as
Continue reading “How to install Oracle Database 18c XE on Linux 8”
curl -OL https://download.oracle.com/otn-pub/otn_software/db-express/oracle-database-xe-18c-1.0-1.x86_64.rpm
dnf install -y /bin/bash /bin/sh /etc/redhat-release bc bind-utils binutils ethtool glibc glibc-devel initscripts ksh libaio libaio-devel libgcc libstdc++ libstdc++-devel make module-init-tools net-tools nfs-utils openssh-clients pam procps psmisc smartmontools sysstat unzip util-linux-ng xorg-x11-utils xorg-x11-xauth libnsl
rpm -i --nodeps oracle-database-xe-18c-1.0-1.x86_64.rpm
Today 25 years ago Java made its first public appearance. Back then, Java promised to be a general-purpose programming language that you “write once, run anywhere“. It came with a new and unique way to compile Java source code down to bytecode, an intermediate representation that could be understood, compiled at runtime and run by the Java Virtual Machine (JVM). It was the combination of Java bytecode and the JVM that made it possible for Java to keep that “write once, run anywhere” promise. The Java Virtual Machine was for Java programs exactly what the name suggests, a (virtual) machine. Regardless of which computer you had, which OS you were running, if you had a JVM installed, you could run your compiled Java program on it without the need for porting or recompiling the program first.
Continue reading “25 years of Java – Happy Birthday!”
Oracle has published its Oracle Database JDBC client libraries on Maven Central. From now on you can find Oracle Database related jar files under the
com.oracle.database group id. You will find all libraries from version 188.8.131.52 (e.g. ojdbc6) to 19.3.0 (e.g. ojdbc10).
Going forward, Oracle will use Maven Central as one of the primary distribution mechanisms for Oracle Database Java client libraries, meaning that you will also be able to find new versions of these libraries on Maven Central in the future.
To get the latest Oracle Database JDBC driver, use the following dependency GAV in your Maven POM file:
Continue reading “Oracle Database client libraries for Java now on Maven Central”