asmcmd “connected to an idle instance” – not

This is more a note to myself in case I’ll encounter a similar environment. But maybe it helps others – at least my search results weren’t suitable to Windows in the first place.

Issue

C:\> set ORACLE_HOME=C:\path\to\grid\home
C:\> set ORACLE_SID=+ASM1
C:\> asmcmd
connected to an idle instance.

Continue reading

Sponsored Post Learn from the experts: Create a successful blog with our brand new courseThe WordPress.com Blog

WordPress.com is excited to announce our newest offering: a course just for beginning bloggers where you’ll learn everything you need to know about blogging from the most trusted experts in the industry. We have helped millions of blogs get up and running, we know what works, and we want you to to know everything we know. This course provides all the fundamental skills and inspiration you need to get your blog started, an interactive community forum, and content updated annually.

JDBC, Linux and Entropy

Some troubles — especially those happening only sporadically — are not so easy to shoot and call for a deeper understanding of the matter. In the following real-world example this means: SQL*Net Tracing and some knowledge about the inner workings of the server’s operating system, particularly random number generation.

This case was suited well to demonstrate an approach to trouble-shoot connections to Oracle databases.

Continue reading

Change Repository DB Connection in EM 13c

Sometimes it’s hard to find what you’re looking for in the Oracle documentation or on MOS if you don’t already know what exactly to search for. This happened to me while trying to find out  how the method of changing the DB connection for the EM repository changed in 13c. So I thought my findings are worth sharing.

In earlier releases of Enterprise Manager (Grid Control or Cloud Control), connection settings were stored in a file named “emoms.properties”. While this file still existed on the EM 13.2 environment I was working on, there wasn’t any connection string in it.

After searching for quite a while (sifting a wealth of outdated documents), I found out there’s a specific emctl command to set the DB connection. This command already exists since 11g where it had to be used when the repository DB was put in a RAC. Now it seems to be the only way to change the connect string, be it RAC or single instance.

Continue reading