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Author Archives: Ronny Egner
Nexenta: Configuring iSCSI Multipath Target with multiple network cards
This is a short post about how to configure iSCSI multipathing using Nexenta. I let it is neccessary to document it since the documentation is rather spare about it. In my lab setup i had a machine with two physically … Continue reading
Posted in Oracle in general
9 Comments
Using ASMLib with Oracle Unbreakable Kernel (UEK)
Starting with the Oracle Unbreakable Enterprise Linux Kernel (UEK) the ASMlib drivers are now included in the kernel. This means that updating the kernel does not require installing the appropriate kernel modules as well. In addition to the kernel modules … Continue reading
Posted in Oracle in general
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Nexenta: Convert syspool to AHCI drivers
When using Nexenta it is highly recommended to attach the syspool disks via AHCI instead of SATA. Attaching them via SATA might cause I/O errors leading to complete outages. The only way to solve this is to replace the driver … Continue reading
Posted in Opensolaris, Openstorage
2 Comments
“Exiting Time2Retain handler because session_reinstatement=1” with LIO (linux-iscsi.org iSCSI implementation)
I just migrated my Ubuntu iSCSI storage server to Ubuntu 12.04 which ships with a new iSCSI implementation: LIO (linux-iscsi.org). Aside from the fact that this project lacks a HUGE amount of documentation I want to share this problem with … Continue reading
Posted in Oracle in general
1 Comment
Your private tape library – a pre-configured virtual machine with MHVTL and iSCSI export capability
I am using MHVTL for quite a while now. MHVTL emulates a configurable tape library and stores the data in the file system. Normally when testing i am installing the backup software directly where MHVTL runs. But that only works … Continue reading
Posted in Networker
7 Comments
RMAN-10008/RMAN-04006: error from auxiliary database: ORA-12537: TNS:connection closed
Just a short note: When doing a “duplicate from active database” with a larger amount of channels you need to set the PROCESSES setting in your parameter file to a reasonable high value (i.e. 500). Otherwise the duplicate will fail … Continue reading
Posted in Oracle in general
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Oracle announces support for 11g R2 databases on OEL 6
Oracle just released a statement which states the immediate availability and support using Oracle database 11g R2 with Oracle Enterprise Linux 6. You can read the official announce here.
Posted in Oracle in general
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PRVF-5300: Failed to retrieve active version for CRS on this node when installing 11.2.0.2 DB on 11.2.0.3.0 Grid Infrastructure
I just played with 11.2.0.3.0 patchset on Linux x86_64 (in my testcase Oracle Enterprise Linux 5.6) and tried to install a 11.2.0.2.0 database on it. It fails with: PRVF-5300: Failed to retrieve active version for CRS on this node The … Continue reading
Posted in Oracle in general
9 Comments
INFO: task blocked for more than 120 seconds.
When running some high workloads on UEK kernels on systems with a lot of memory you might see the following errors in /var/log/messages: INFO: task bonnie++:31785 blocked for more than 120 seconds. “echo 0 > /proc/sys/kernel/hung_task_timeout_secs” disables this message. … Continue reading
Posted in Oracle in general
23 Comments
11.2.0.3.0 is out
Since almost two week Oracle released Oracle database patchset 11.2.0.3.0. I am a little bit late with this news. Martin Bach already posted a lot of stuff about this so let me link to his guides: – Release Accouncement … Continue reading
Posted in Oracle in general
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