Recently I came across a small but strange problem with an AIX 5.3 system running Oracle. When we tried to perform an offline filesystem backup of the sapdata1 filesystem , we received errors stating the certain files were not able to opened . I confirmed this by using the 'file' command on some of the database files. I received the following messages:   gibsonc@hxaix35 /oracle/TC0/sapdata1/sr3_6 $ file sr3.data6 sr3.data6: 0653-902 Cannot open the specified file for reading.      I discovered that the sapdata1 filesystem had not been mounted... [More]

My first dW blog entry. Some of my favoritre AIX update and migration tools ( nimadm and multibos ) have been enhanced to perform cool new tricks! In particular , multibos now supports AIX migrations not just updates to newer TLs and SPs . Unfortunately, from what I've read, you need to be running AIX 6.1 first. So I won't be able to use multibos to migrate from AIX 5.3 to 6.1. So I'll use nimadm instead. Some brief details are provided below. Refer to the online AIX documentation for more information. Enhanced nimadm command. The nimadm... [More]

If I run lparstat on an AIX LPAR on a JS22 blade, I don't see the "app" field: # lparstat System configuration: type=Shared mode=Uncapped smt=On lcpu=4 mem=4096MB psize=4 ent=0.20 %user %sys %wait %idle physc %entc lbusy vcsw phint ----- ----- ------ ------ ----- ----- ------ ----- ----- 72.9 19.7 0.1 7.4 0.00 1.0 1.4 219822533 267118 I'd like to see the "app" field. The "app" value tells me my "available physical processors (app) in the shared pool" stat's. Normally, I would change the LPAR properties... [More]

For those who weren't aware.....starting with AIX 5.3 TL7, quorum changes are allowed online without having to varyoff and varyon the volume group. This also means no reboot is required when changing quorum for rootvg. Of course this also applies to AIX 6.1.

Tags:  rootvg aix mirror quorum

Ever wondered what process just core dumped? The AIX errpt command will tell you where the core file has been dumped and in most cases the program name: # errpt -a | head -45 --------------------------------------------------------------------------- LABEL:          CORE_DUMP IDENTIFIER:     C69F5C9B Date/Time:       Wed Jul 22 13:41:52 EET 2009 Sequence Number: 2694 Machine Id:      00C01C704C00 Node Id:         hxaix14 Class:           S Type:            PERM Resource Name:   SYSPROC Description SOFTWARE PROGRAM ABNORMALLY TERMINATED Probable... [More]