Andrea Leofreddi's Blog

A Collection of Random Thoughts

TimEL: a new streaming API
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TimEL: a new streaming API

TimEL, a Java library specifically developed to ease the evaluation of time dependent expressions, comes to with a new streaming API allowing it to crunch

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Jetty on RHEL 7/CentOS 7

If you look around on the internet you may find a lot of blogs guiding you on the installation of Jetty in RHEL 7 (or

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cyberz.org is now vleo.org

Back in the 90s I was used to hang out on the irc network, and there, for many years, I’ve used the cyberz nickname,

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SELinux: how to change default context of a directory

Sometimes you may want to override the default SELinux context for a given path. This can be easily accomplished editing /etc/selinux/targeted/contexts/files/

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WebLogic 12c: very slow domain creation

When creating a new domain on Linux, does Weblogic gets stuck at the message? Try passing the -Djava.security.egd=file:///dev/urandom option to

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Resuming an scp transfer

Got tired of scp’s inability to resume a large transfer? Try rsync over ssh: rsync --rsh='ssh' -av --progress --partial sourcefile user@host:target

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How to expand a ZFS device

Nowadays virtual environment are very common, thus a hot increase of an existing drive into a virtual machine is a very common operation (roughly equivalent

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SMF Manifest for Oracle 12c DBMS on Solaris 11.1

Here’s the procedure for adding Oracle 12c DBMS as SMF service in Solaris 11.1, based on this guide. The version provided here is

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Integrating Oracle and MySQL with Bacula

After putting your precious data into your preferred database (Oracle or MySQL if you’re here) your next worry should be how to back them

Multi-lun autoloader with VMware ESXi 5.0 with Adaptec SCSI HBA
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Multi-lun autoloader with VMware ESXi 5.0 with Adaptec SCSI HBA

VMware ESXi 5 is not able to handle multi-lun devices by default, so many SCSI autoloaders are not supported as-is (as HP StorageWorks LTOs), showing