Comments for vnull's blog http://jakub.wartak.pl/blog by Jakub Wartak Mon, 16 Aug 2010 22:58:43 +0200 http://wordpress.org/?v=2.8.4 hourly 1 Comment on OracleVM (XEN) network performance by guest http://jakub.wartak.pl/blog/?p=87&cpage=1#comment-422 guest Mon, 16 Aug 2010 22:58:43 +0000 http://vnull.pcnet.com.pl/blog/?p=87#comment-422 what's performance on NFS's -o noac for ocr/voting disks? Thanks, Guest what’s performance on NFS’s -o noac for ocr/voting disks?

Thanks,

Guest

]]> Comment on SHA1, SHA256, SHA512 in Oracle for free without using DBMS_CRYPTO by DinhThuc http://jakub.wartak.pl/blog/?p=124&cpage=1#comment-420 DinhThuc Fri, 07 May 2010 10:27:49 +0000 http://vnull.pcnet.com.pl/blog/?p=124#comment-420 I need source code sha512 using procedure in oracle (v 9). I have read this tutorial but I dont't understand. You can give me your detail tutorial ? I need source code sha512 using procedure in oracle (v 9). I have read this tutorial but I dont’t understand. You can give me your detail tutorial ?

]]> Comment on OracleVM (XEN) network performance by admin http://jakub.wartak.pl/blog/?p=87&cpage=1#comment-415 admin Wed, 21 Oct 2009 21:33:47 +0000 http://vnull.pcnet.com.pl/blog/?p=87#comment-415 Honestly I never tested MTU=9k with XEN facing external systems because all my environment was always connected to 100Mbit FDX. Those tests were made only basing on the inter-VM XEN communication only (on dedicated "virtual" bridges in dom0). Honestly I never tested MTU=9k with XEN facing external systems because all my environment was always connected to 100Mbit FDX.
Those tests were made only basing on the inter-VM XEN communication only (on dedicated “virtual” bridges in dom0).

]]> Comment on OracleVM (XEN) network performance by Ersin ER http://jakub.wartak.pl/blog/?p=87&cpage=1#comment-414 Ersin ER Tue, 20 Oct 2009 20:44:49 +0000 http://vnull.pcnet.com.pl/blog/?p=87#comment-414 Thanks for the MTU trick but I have a question: Don't we need to set the same value for ethX and pethX interfaces on the host (dom0)? Thanks for the MTU trick but I have a question:

Don’t we need to set the same value for ethX and pethX interfaces on the host (dom0)?

]]> Comment on SHA1, SHA256, SHA512 in Oracle for free without using DBMS_CRYPTO by chris gould http://jakub.wartak.pl/blog/?p=124&cpage=1#comment-411 chris gould Tue, 02 Jun 2009 19:24:18 +0000 http://vnull.pcnet.com.pl/blog/?p=124#comment-411 Thanks, that's great. Thanks, that’s great.

]]> Comment on SHA1, SHA256, SHA512 in Oracle for free without using DBMS_CRYPTO by admin http://jakub.wartak.pl/blog/?p=124&cpage=1#comment-410 admin Tue, 02 Jun 2009 16:49:39 +0000 http://vnull.pcnet.com.pl/blog/?p=124#comment-410 Sure, here it is: http://vnull.pcnet.com.pl/dl/oracle/security/javacryptotest1.tgz This is proof-of-concept code and you are on you own. BTW: you can easily alter it to have AES256 or Serpent256 in 5 minutes ready ;) Sure, here it is: http://vnull.pcnet.com.pl/dl/oracle/security/javacryptotest1.tgz
This is proof-of-concept code and you are on you own.
BTW: you can easily alter it to have AES256 or Serpent256 in 5 minutes ready ;)

]]> Comment on SHA1, SHA256, SHA512 in Oracle for free without using DBMS_CRYPTO by chris gould http://jakub.wartak.pl/blog/?p=124&cpage=1#comment-409 chris gould Tue, 02 Jun 2009 16:33:07 +0000 http://vnull.pcnet.com.pl/blog/?p=124#comment-409 This looks great, but can you publish your "main.java" file and any others (CommonHash.java ?) which aren't in the GNU downloads? Thanks This looks great, but can you publish your “main.java” file and any others (CommonHash.java ?) which aren’t in the GNU downloads?

Thanks

]]> Comment on MikroTik #2 by Marcin http://jakub.wartak.pl/blog/?p=8&cpage=1#comment-408 Marcin Tue, 02 Jun 2009 13:50:03 +0000 http://vnull.pcnet.com.pl/blog/?p=8#comment-408 Super :) dzieki za podpowiedz, rozumiem wszystko :) Super :)
dzieki za podpowiedz, rozumiem wszystko :)

]]> Comment on MikroTik #2 by admin http://jakub.wartak.pl/blog/?p=8&cpage=1#comment-407 admin Mon, 01 Jun 2009 15:39:25 +0000 http://vnull.pcnet.com.pl/blog/?p=8#comment-407 Trzeba napisac modul jadra do linuxa przechwytujacy to i owo z nadpisaniem czegos trzeciego :) Trzeba napisac modul jadra do linuxa przechwytujacy to i owo z nadpisaniem czegos trzeciego :)

]]> Comment on MikroTik #2 by Marcin http://jakub.wartak.pl/blog/?p=8&cpage=1#comment-406 Marcin Mon, 01 Jun 2009 08:46:55 +0000 http://vnull.pcnet.com.pl/blog/?p=8#comment-406 Witam. Próbowałem to zrobić na CF kingstona 2GB i niestety sie nie udało ;/ Moze jakaś podpowiedź :) Witam.
Próbowałem to zrobić na CF kingstona 2GB i niestety sie nie udało ;/
Moze jakaś podpowiedź :)

]]> Comment on Brief description of work on my MAA challenge lab… #1 by Storage migration for ASM database deployed on Oracle Enterprise Linux in Oracle VM without downtime. - vnull’s blog http://jakub.wartak.pl/blog/?p=99&cpage=1#comment-405 Storage migration for ASM database deployed on Oracle Enterprise Linux in Oracle VM without downtime. - vnull’s blog Thu, 21 May 2009 18:12:38 +0000 http://vnull.pcnet.com.pl/blog/?p=99#comment-405 [...] Oracle databases using ASM this is possible. It was performed on configuration better described here. One note: the LUN can be visible through dom0 or directly by domU (by passing PCI hardware [...] [...] Oracle databases using ASM this is possible. It was performed on configuration better described here. One note: the LUN can be visible through dom0 or directly by domU (by passing PCI hardware [...]

]]> Comment on DBMS_REDEFINITION – holy grail of Oracle by SQL Tutorials http://jakub.wartak.pl/blog/?p=88&cpage=1#comment-404 SQL Tutorials Fri, 01 May 2009 01:58:23 +0000 http://vnull.pcnet.com.pl/blog/?p=88#comment-404 Does anyone know if there is another language or set of commands beside SQL for talking with databases? I'm working on a project and am doing some research thanks Does anyone know if there is another language or set of commands beside SQL for talking with databases?

I’m working on a project and am doing some research thanks

]]> Comment on (Sun) Solaris Cluster 3.2 on x86-32bit … on VMware – screenshot by admin http://jakub.wartak.pl/blog/?p=56&cpage=1#comment-403 admin Fri, 03 Apr 2009 16:45:10 +0000 http://vnull.pcnet.com.pl/blog/?p=56#comment-403 Unfortunatley no, because i don't have that one. Just arm your workstation/server with minimum 4GB RAM, RAID0 array from minimum 2-3 HDDs(can be SATA). Go with minimum 4 cores or 4 CPUs for it. Then install VMware Server(for shared SCSI channels -- it's a hack). Then build 2 VMs with 2 cores/CPUs per VM. Build several shared SCSI LUNs and try to get Solaris Cluster up & running. Without dedicated cores you will end up with "pm_tick delay" issue because SC uses realtime processes for evicting and detecting systems hang issues. On top of that then you can install Oracle RAC if you want to (it's pretty heavy, and in my opinion it's too complicated). Better have 64-bit CPU because 32-bit as I remeber so many bugs that it was pretty unstable (but mainly due to virtualisation). IMHO if you want to play with Oracle better utilise RAC without SC (for simplicity). RAC+Clusterware itself is very complex... Unfortunatley no, because i don’t have that one. Just arm your workstation/server with minimum 4GB RAM, RAID0 array from minimum 2-3 HDDs(can be SATA). Go with minimum 4 cores or 4 CPUs for it. Then install VMware Server(for shared SCSI channels — it’s a hack). Then build 2 VMs with 2 cores/CPUs per VM. Build several shared SCSI LUNs and try to get Solaris Cluster up & running. Without dedicated cores you will end up with “pm_tick delay” issue because SC uses realtime processes for evicting and detecting systems hang issues. On top of that then you can install Oracle RAC if you want to (it’s pretty heavy, and in my opinion it’s too complicated).

Better have 64-bit CPU because 32-bit as I remeber so many bugs that it was pretty unstable (but mainly due to virtualisation).

IMHO if you want to play with Oracle better utilise RAC without SC (for simplicity). RAC+Clusterware itself is very complex…

]]> Comment on (Sun) Solaris Cluster 3.2 on x86-32bit … on VMware – screenshot by Ravi Bhatia http://jakub.wartak.pl/blog/?p=56&cpage=1#comment-402 Ravi Bhatia Fri, 03 Apr 2009 16:24:25 +0000 http://vnull.pcnet.com.pl/blog/?p=56#comment-402 Can you send me detail steps to install oracle using Sun clusters on VMWARE windows XP being the host machine. Can you send me detail steps to install oracle using Sun clusters on VMWARE windows XP being the host machine.

]]> Comment on Oracle Clusterware 11g addNode.sh ONS bug (with GDB fun & solution) by Dzivak http://jakub.wartak.pl/blog/?p=103&cpage=1#comment-401 Dzivak Fri, 20 Mar 2009 06:39:48 +0000 http://vnull.pcnet.com.pl/blog/?p=103#comment-401 You can read oracle article 239998.1, ithink it's can help resolve this problem also. You can read oracle article 239998.1, ithink it’s can help resolve this problem also.

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