Infrastructure at your Service

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Database Administration & Monitoring

Steven Naudet

SQL Server connectivity issue – troubleshoot TLS configuration

By | Database Administration & Monitoring, Security, SQL Server | No Comments

In the blog post, I will share a case of troubleshooting a connectivity issue with SQL Server. The problem occurred in a migration context. The SQL Server databases (in version 2008 to 2014) from multiple applications were consolidated on a new server with SQL Server 2019. Application servers were also migrated to new VMs. The new servers are hosted on a brand new infrastructure managed by a third-party provider which my customer has very little…

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Daniel Westermann

temBoard on SLES15 – 2 – The agent

By | Database Administration & Monitoring | No Comments

In the last post we’ve installed the temBoard repository and the UI. As this alone is not so much fun, we’ll be installing the temBoard agent on another SLES 15 machine in this post. We’ll end up with one PostgreSQL instance registered in the temBoard repository and this instance is constantly monitored. With the repository and the UI we had the requirement to use Python 2.7, but this is not anymore required for the temBoard…

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Dieter Henig

Rename your DB clone completely

By | Database Administration & Monitoring, Database management, Oracle | One Comment

Introduction Have you ever renamed your database? When you cloned a DB, you probably started it with a new name and cloning (duplicating) with RMAN provided a new DBID, right? So why should we need to rename a DB? There may be several reasons: due to changed company rules, you need to rename all your DBs After a restore you need to run the DB with another name After a snapshot clone, (see my recent…

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Christophe Cosme

SQL Server – Contained Database

By | Database Administration & Monitoring | No Comments

Introduction You may have encounter already case when an application offers the possibility to create and maintain SQL database users and consequently the associated SQL Server instance logins. That’s of course not especially really what a DBA likes, loosing control on the logins that are created on the instance he is responsible of. But sometimes you have to deal with such situation especially when a customer ask you to enable this. Well, then it’s starts…

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Daniel Westermann

temBoard on SLES15 – 1 – The WebUI

By | Database Administration & Monitoring | No Comments

During our last SwissPUG online meeting there was a presentation about monitoring PostgreSQL with temBoard. A question that came up afterwards was: How to install that on SLES 15 as there are only packages for Debian and CentOS/RHEL. As temBoard is written in Python you can also install it using pip. That requires a bit more work compared to the package method, but it is perfectly fine. The only downside (but this is true for…

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Dieter Henig

Clone a Terabyte Database in Seconds

By | Database Administration & Monitoring, Database management, DevOps, Hardware & Storage, Oracle | One Comment

Introduction Have you ever cloned a database using RMAN? Have you ever gotten the advice not to clone during daytime to avoid performance downgrade on the entire storage or network? For a proof of concept, we wanted to evaluate a Pure Storage array in terms of feasibility and speed of database cloning by using storage-based snapshot technology. First, I want to mention that PureStorage produces Storage devices in several sizes, all based on NVMe devices…

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Steven Naudet

SQL Server: Create a Shared Storage for your Failover Cluster LAB

By | Database Administration & Monitoring, SQL Server | No Comments

I’m currently working on the migration of a Failover Clustered SSAS instance from Windows Server 2012 to Windows Server 2019. The context is quite complex and in order to choose the right migration scenario I need to play with it on my LAB environment first. I usually work with AlwaysOn architectures and it’s not often that I need to set up an FCI with its Cluster Shared Volume. As a reminder, a Cluster Shared Volume…

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Grégory Steulet

Oracle Java Virtual Machine included in Oracle Database license ?

By | Database Administration & Monitoring | No Comments

Introduction A customer of mine asked me a licensing question regarding the usage or Oracle Java (OJVM) in an Oracle database.  Basically this customer have an Oracle Database Standard Edition License and would like to use Oracle JVM in order to load Java classes in his PL/SQL code executed by this database. The customer would like to ensure that his Oracle Database Standard Edition gives him the right to execute Java Classes in his PL/SQL…

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Lazhar Felahi

Oracle Data Integrator Cloud

By | Application integration & Middleware, Cloud, Database Administration & Monitoring, Enterprise content management, Oracle | No Comments

Data and applications integration is always a technical challenge for most of the companies. All data integration tool ensures that information is timely, accurate, and consistent across complex systems. Oracle Data Integrator (ODI) is different than traditional data integration tools in the sense it integrates data in a different orders. ODI is known as en E-LT because it Extracts data from the source system and Loads and Transforms data into the target system while traditional…

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Franck Pachot

ORA-32635: not a single cell reference predicate

By | Database Administration & Monitoring | No Comments

By Franck Pachot . I spent 30 minutes to try to understand this error with a query that I’ve run in many environments for years. So if you google it you may arrive here and the solution may be checking whether you have NLS_COMP=LINGUISTIC SQL> alter session set nls_comp=linguistic; Session altered. SQL> alter session set nls_language=french; Session modifiee. SQL> select * from ( 2 select 42 snap_id,’TM’ type,’DB time’ name,0 microseconds from dual 3 )…

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