Author: Rene Antunez

EM13cR2 Installation Failing on BI Publisher Configuration

This is going to be a short post as there wasn’t much information on this type of failure when searching for it. Also, the IP’s are changed due to security reasons I was working on an Oracle EM13cR2 installation and…

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Error ORA-01033 After Doing a Switchover in a 12.1 RAC Environment

The other day I did a switchover in a RAC environment , which went pretty smooth , but after doing the switchover in the primary, I kept getting the following error: SELECT dest_name,STATUS,error FROM gv$archive_dest_status WHERE dest_id=2;   DEST_NAME ——————————————————————————–…

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ORA-30926 While Using impdp Over a Database Link

The other day I was doing an import using impdp in 12.1.0.2, and received the following error:’ORA-30926: unable to get a stable set of rows in the source tables’.   Starting "SYS_PYTHIAN"."SYS_IMPORT_TABLE_03": sys_pythian/******** parfile=table_import.par Processing object type TABLE_EXPORT/TABLE/TABLE Processing object…

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While upgrading to 12.1.0.2 I faced error ORA-01830 / ORA-06512

The other day I was running an upgrade for a client that is using ACLs ( Access Control Lists) from 11.2.0.3 to 12.1.0.2. If you have been doing upgrades to 12c, you know that when running the catctl.pl -n 4 catupgrd.sql it…

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Creating an Oracle Database Cloud Service

Back in late June of 2015, Larry Ellison launched several public cloud services and one of those services was the public DBaaS. Today, I had the opportunity to try out this new service. This blog post will examine how to…

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Are you ready to be a private cloud service provider?

When defining what a cloud service is, we need to know that it is not a technology per se, but its an architectural and operational paradigm. It is a self-service computing environment offering the ability to create, consume, and pay for services….

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EM12c : Login to GUI with the correct password causes authentication failure

So the other day I was trying to log in to my EM12c R4 environment with the SSA_ADMINISTRATOR user, and I got the error: “Authentication failed. If problem persists, contact your system administrator” I was quite sure that the password…

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Quick Tip : Oracle User Ulimit Doesn’t Reflect Value on /etc/security/limits.conf

So the other day I was trying to do a fresh installation of a new Oracle EM12cR4 in a local VM,  and as I was doing it with the DB 12c, I decided to use the Oracle preinstall RPM to…

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Cassandra 101 : Understanding What Cassandra Is

Want to understand the basics of Cassandra and how it works? Pythian data expert Rene Antunez explains…

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MySQL: Troubleshooting an Instance for Beginners

So as you may know, my new position involves the MySQL world, so I’m in the task of picking up the language and whereabouts of this DBMS, and my teamate Alkin Tezuysal (@ask_dba on Twitter) has a very cool break and…

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