Hi, Thanks, your backup settings are similar to mine. I will keep this in mind.
What prompted you to increase the settings in sysctl.conf? Was it problems similar to mine? Or prior knowledge/documents? Regards Michael Andrewes -----Original Message----- From: Döhr, Markus ICC-H [mailto:[EMAIL PROTECTED] Sent: Thursday, 3 June 2004 9:28 PM To: 'Filip Sergeys' Cc: '[EMAIL PROTECTED]' Subject: RE: SapDB 7.4 regular crash on backup We're running also 8 GB DB Server (SAP) with the following settings in /etc/sysctl.conf # Kernel settings (for SAP R/3) # kernel.shmmax=4113682943 kernel.sem=4096 512000 1600 2048 kernel.msgmax=16384 kernel.shmall=4113682943 kernel.msgmni=1024 vm.heap-stack-gap=256 Shared memory and IPC parameters for central instance (Database + R/3) net.core.rmem_max=8388608 net.core.wmem_max=8388608 net.core.wmem_default=8388608 net.core.rmem_default=8388608 net.core.netdev_max_backlog=4096 net.ipv4.tcp_rmem = "4096 87380 4194304" net.ipv4.tcp_wmem = "4096 87380 4194304" net.ipv4.tcp_mem = "4096 87380 4194304" All the "net.*"-parameter helped us in speeding up our backup by 20 %. We do that backup via separate network segment with GBit-Ethernet. This has to be changed then of course on the backup server too and the interfaces have to be reinitialized (/etc/init.d/network restart). Greetz, SIEGENIA-AUBI KG Informationswesen i.A. Markus Döhr SAP-CC/BC, SAPDB-DBA Tel.: +49 6503 917-152 Fax: +49 6503 917-7152 E-Mail: [EMAIL PROTECTED] Internet: http://www.siegenia-aubi.com -- MaxDB Discussion Mailing List For list archives: http://lists.mysql.com/maxdb To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MaxDB Discussion Mailing List For list archives: http://lists.mysql.com/maxdb To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
