Why Oracle 23ai from Exadata? With Oracle Database 23ai being postponed to a later date (“tba”) in November 2024, and many people not being part of the Oracle Beta Program, it might be useful to install a regular database 23ai (not the Developer Free Edition), but of course for testing purposes only! This has to […]
Tag: ASM
Create Oracle Data Guard Standby with DBCA
Demands of Automation You can easily create an Oracle Data Guard Standby Database with the Database Configuration Assistant DBCA. That’s especially interesting if you have automation at work, and are not keen on configuring stuff all over the place. This is available in version 19c upwards. DBCA uses RMAN DUPLICATE FOR STANDBY with an auxiliary […]
How to disable Oracle ACFS drivers / registry resource
Sometimes an installed ACFS can cause trouble, especially if we don’t or can’t use it (e.g. when not using an UEK Linux kernel, like with SuSE Linux Enterprise Server SLES). There’s lots of documentation how to create and maintain ACFS file systems, but how to get rid of ACFS at all wasn’t so easy to […]
Oracle Grid Infrastructure / ASM – ERROR: failed to update diskgroup resource ora.DATA.dg
Recently, when installing a database on a grid infrastructure, dbca failed with the message that it wasn’t able to establish the dependency between the database and the corresponding grid infrastructure resource of the DATA ASM disk group I was using for my data files. Its name would have been “ora.DATA.dg”. (ERROR: failed to establish dependency […]
Upgrading Oracle Clusterware: [INS-40406] The installer detects no existing Oracle Grid Infrastructure software on the system
Upgrading Oracle Grid Infrastructure 11.2 (it’s just another marketing name for the Oracle Clusterware, formerly known as Cluster Ready Services CRS) usually is easy: The runInstaller offers an upgrade mode, and discovers nodes and versions without further effort. But what, if not? The message will be “[INS-40406] The installer detects no existing Oracle Grid Infrastructure […]
Oracle Clusterware 11.2: ASM crashes at startup
These days, a customer’s Oracle Clusterware (2 nodes) crashed one ASM instance at every startup. More Facts: It was not possible to start it manually, too. The CSSD was running. For obvious reasons, CRSD did not start. The other ASM instance in the cluster recognized CLUSTER RECONFIGURATION for a short period of time. The ASM […]
Oracle Grid Infrastructure: How to recover from a messed up ASM/CSSD diskstring
Oracle Grid Infrastructure 11.2 with voting files and OCR in an ASM diskgroup can be a little tricky if you mess up the voting file voodoo. You know the basic situation? With Oracle Grid Infrastructure aka Oracle Clusterware, we are storing your cluster quorum and config repository (OCR) into a disk group. But CSSD needs […]
Oracle ASM / CloudFS licensing policy
Sad to see, at least from June 1st 2011 the new Grid Infrastructure ASM features “ACFS” (ASM cluster file system) and “ADVM” (ASM dynamic volume manager) are now licensed as “Cluster FIle System” (ClusterFS). As far as I can see from the Technology Global Price List, it’s US$ 5000 per CPU, US$ 1100 perpetual. Alternatively, […]
Oracle ASM quote of the week
Please, do yourself a favour and NEVER EVER use ASM on Windows! “Dear Sir, obviously I forgot to put a file system on drives E:, F: and G: of the DB machine. I did this now, and hope you excuse the delay. Best regards John Doe Windows Server Administrator” /* no comment */ Martin […]
Oracle Grid Infrastructure 11gR2: How to clean up to repeat root.sh
To clean up a tilted installation of Oracle Grid Infrastructure isn’t that intuitive. I had to do it today, and this is my collection what to do and what to read. It’s made for repeating root.sh, that’s not allowed to run twice or more times without cleaning up in between. So first have a look […]
DOAG Konferenz 2009: Impressions Day 3 (final)
Thursday 19th was the last day of DOAG Confernce 2009. Compared with the second day, the program was much more dense: For my (DBA) profile there have been several hours, where more that one talk would have been appropriate. This list is, what I collected during the day. […]
DOAG Konferenz 2009: Impressions Day 2
As promised, today my impressions of yesterday (confusing, I know). Clarification: This is about Wednesday, November 18th. I’m still at DOAG Conference 2009 in Nuremberg. Wednesday was a silent day for my interests, especially at noon there have been less talks being of interest, but maybe they have done something for my general knowledge… So […]
DOAG Konferenz 2009: Impressions Day 1
These days, the DOAG Conference 2009 happens in Nuremberg, Germany. First day was yesterday, Tuesday November 11th 2009. This is a machine-readable copy of my scratchpad, coming from the different talks I attended. Sun Oracle Database Machine Exadata 2: The “Quarter Rack” (consisting of 2 Servers and 3 storage nodes) sounds interesting. 11gR2 has some […]
Oracle 11gR2 ASM / ACFS: A first benchmark (poorly)
Hi folks, since Oracle 11g Release 2 is out now, I had to test one of the most-missed ASM features: the ASM cluster file system ACFS. My Setup: Two VMware nodes with 2 CPUs and 1,5GB of RAM each Oracle Enterprise Linux 5.3 x86_64 Four virtual cluster disks from the ESX server, 10GB in size […]
Oracle 11gR2 ASM: Changed permission policy (ORA-15260)
Did you recently see the new error ‘ORA-15260: permission denied on ASM disk group’ in your ASM administration? Maybe you are still connected as SYSDBA, old habit from 10g? A quick citation from the Oracle Docs: The SYSOPER privilege permits the following subset of the ALTER DISKGROUP operations: diskgroup_availability, rebalance_diskgroup_clause, check_diskgroup_clause (without the REPAIR option). […]
Oracle 11g look-at’s
That’s a personal, quite unsorted list of (new or older) features I recently collected. All of them are things, I’d consider valuable or at least important to care about as soon as 11g is involved. It might be for system architecture knowledge, concept tasks, DBA hands-on, good-to-know or any other thing that my happen in […]
Lecture “Highly available Communications Server” (Oracle Database) at DOAG conference 2007
Hi, I’ll give a lecture about high availability with Oracle RAC and Dataguard at DOAG Conference 2007 (annual conference of the German Oracle User’s Group). The talk will be in German. (“Ein hochverfügbarer Kommunikationsserver mit RAC, ASM, redundant shared media und DataGuard”) When? Thursday, November 22nd 2007 1300hrs Where? CCN CongressCenter Nürnberg Ost Messezentrum D-90471 […]