Database Administration & Monitoring

odacli create-database fails on ODA X7-2HA with java.lang.OutOfMemoryError

Today I was onsite at my customer and he told me: I can no longer create databases on my ODA X7-2HA, every time I try to use odacli create-database it fails, please help. Ok, let’s check what happens, the customer(…)

Oooooops or how to undelete a file on an ext4 filesystem

It happens within the blink of an eye. A delete command was executed and half a second after you hit the enter button you knew it. That was a mistake. This is the scenario which leads to this blog entry(…)

OEM 13c Repository view gc$metric_values_daily

Oracle OEM 13c offers the possibility to generate reports about Oracle Database Tablespace Monthly Space Usage. The displayed information is quite useful and display a lot of information:     The report displays the details for(…)

PostgreSQL 12: csv output format for psql

Getting data out of PostgreSQL in csv format is not a big issue. Using copy you can do that easily. PostgreSQL 12 will enhance psql so that you can directly return csv formatted output from a(…)

PostgreSQL 12: log_statement_sample_rate

A common way to identify long running queries in PostgreSQL is to set log_min_duration_statement to a value that is known to cause troubles. In other words: If you know most of your statements usually execute in(…)

Extend a Oracle Access Manager 12.2.1.3 with User Messaging Service

After upgrading a Oracle Access Manager from 11.1.2.3 to 12.2.1.3, one of my customer requested from me to configure the Forget Password feature. This feature requires the User Messaging Service that was part of the SOA software in previous versions.

No more recovery.conf in PostgreSQL 12

Traditionally everything which is related to recovery in PostgreSQL goes to recovery.conf. This is not only true for recovery settings but also for turning an instance into a replica which follows a master. Some days ago(…)

SQL Server 2019 CTP 2.1 – A replacement of DBCC PAGE command?

Did you ever use the famous DBCC PAGE command? Folks who are interested in digging further to the SQL Server storage already use it for a while. We also use it during our SQL Server performance(…)

Strange behavior when patching GI/ASM

I tried to apply a patch to my 18.3.0 GI/ASM two node cluster on RHEL 7.5. The first node worked fine, but the second node got always an error...

Technical and non-technical sessions at the DOAG 2018

The amazing DOAG 2018 conference is over now. As every year we saw great technical as well as great non-technical sessions. What impressed me was the non-technical presentation “Zurück an die Arbeit – Wie aus Business-Theatern wieder echte Unternehmen werden”(…)