sqlplus preliminary connection

Some time ago a customer had problems with a application that generates many blocking sessions. In the end all the blocking session grow up and exceeds the avaible processes on the database so that the ORA-00020 maximum number of processes exceeded error occur. The customer also ask me, to analyze the problem to know which…

INS-40406 The installer detects no existing Oracle Grid Infrastructure software on the system

Recently I tiried to upgrade a simple 11.2 Grind Infrastructure installation to 11.2.0.4 with the Upgrade Option from the Oracle Universal Installer. During the Upgrade i get the following error: INS-40406 The installer detects no existing Oracle Grid Infrastructure software on the system. CAUSE: The installer was unable to detect any existing Oracle Clusterware or…

Activate Session command failed from IPMI command

Recently one of my customers has tried to add Infiniband Switch as Asset in the Exalogic Control BUI. He finaly have troubels with the IPMI connection to the Infiniband Switches from the Exadata Stack. Trying to access the Infiniband Switches results in a „Unable to establish LAN session“ error [root@dm01dbadm01 ~]# ipmitool -v sel  -H…