Sqlplus / as sysdba throws ORA-01012


This morning the first challenge of the day became the fact that we could not get proper access to one of the databases. We would set the Environment, set the proper ORACLE_SID  and yet after logging on would get

ORA-01012: not logged on

with any query ( select * from v$instance ; show parameter blablah ).

Reading the posts on the web give a quick solution…  First  proof:  the alert log was flooded with messages like these:

ORA-04031: unable to allocate 2072 bytes of shared memory ("shared pool","unknown object","sga heap(1,1)","parameter table block
Wed Feb 27 09:31:49 2013
Process J000 died, see its trace file
Wed Feb 27 09:31:49 2013
kkjcre1p: unable to spawn jobq slave process


Sqlplus /  as sysdba worked, but any query failed with ORA-01012.


Created a pfile from spfile , edited both  SGA_MAX_SIZE and SGA_TARGET  and increased  the  processes as well in the init.ora .

Created spfile file from the altered pfile.

Restarted the Database, and after that happy database ( and dba ).

Happy reading,


The Good , the bad and the Gui Listener


Sometimes it is almost funny how old habits indeed seldom die.  At the Customers site where I am working there still seems to be a culture in which it is not that common to use Gui solutions offered by Oracle to do day-to-day jobs. In Dutch there is an  expression telling unknown things  makes things disliked. Well this week i came across nice behavior of the NETCA tool in an environment where Grid Infrastructure is running and I must say I really liked it.

My environment is a four Node Cluster on Redhat Linux 5.5, my Grid Infra structure is

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Return of the Acfs , October 2012 PSU Patch (14275572) for GI and RDBMS


This week i have patched a preproduction environment with latest PSU patch at this moment ( October 2012). Next week will do the same on the production machines In it self this action is not a big  issue when applying it to the Grid infra structure and RDBMS, but  ACFS is in use on those boxes. Since I hope this will make an interesting note, I have gathered my steps and want to share them with you.

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Installing Oracle Warehouse Builder in 11GR2


For a customer I have to implement  Oracle Warehouse builder on several servers. So it became an interesting session cause during exploring, well actually it was already during installing found out that there are dependencies to  other products that need to be present in the database before you can finish the job successfully. But as always Google  is your friend so i was very happy in the end to  summarise the steps and put them to a blog.

Bottom-line is that the following components need be present in your database before you can start with the Oracle  Warehouse builder:

  • Java virtual Machine
  • Olap

The remarkable thing was that during exploring i came across the  fact that if you  create your database via DBCA these components are  installed. If you are a diehard  and use the command line  /  scripts for that well then you need to do just a bit extra to be victorious. The environments in this note were set up manually.

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