Infrastructure at your Service

Category Archives: Database management

Nicolas Penot

Automate OVM deployment for a production ready Oracle RAC 12.2 architecture – (part 01)

By | Database management, Hardware & Storage, Operation systems, Oracle | No Comments

After having worked with OVM on various architectures I can say that it is a good technology to easily build virtualized environments for production applications. Because it is based on XEN and has simple ways to deal with existing storage (FC, ISCSI, NFS, …) and networking solution (bond, lacp, …) it is a robust and convenient way to virtualized IT infrastructures keeping “bare-metal” performance. Besides, it is an hard partitioning technology which is compliant with…

 
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Stéphane Haby

SQL Server Tips: Deactivate the Customer Experience Improvement Program (CEIP)

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

Before SQL Server 2016, you had the possibility to check the case “Send Windows and SQL Server Error Reports….” during the installation if you want to be a part of the Customer Experience Improvement Program (CEIP). In SQL Server 2016, after the installation, all of the CEIP are automatically turned on. Why? SQL Server and SQL Azure share the same code now. On Azure, this service existed since a long time. It collects a large…

 
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Stéphane Haby

SQL Server 2017 RTM is available: time to try!

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

Now SQL Server 2017 RTM  is available. The first step is to go to the Evaluation Center here After completing the registration with your contact information, you download the file “SQL Server 2017-SSEI-Eval.exe” Run SQL Server 2017-SSEI-Eval.exe and now it begins! A first screen gives me 3 choices to install SQL Server Basic: easy and fast to download and install SQL Server 2017 Custom: Download the setup package and launch the SQL Installation Center Download…

 
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Stéphane Haby

SQL Server 2016: New Dynamic Management Views (DMVs)

By | Database Administration & Monitoring, Database management | No Comments

In SQL Server 2016, you will discover a lot of new Dynamic Management Views(DMVs). In this article, I will just give you a little overview of these useful views for us as DBA. SQL Server 2012 has 145 DMVs and SQL Server 2014 has 166 DMVs. Now, SQL Server 2016 has 185 DMVs. How to see it? It is very easy to have a look using the sys.all_objects view: SELECT * FROM sys.all_objects WHERE TYPE=’V’…

 
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Clemens Bleile

Recommended DB Parameters on the Oracle Database Appliance (ODA)

By | Database Administration & Monitoring, Database management, Hardware & Storage | No Comments

When creating a DB on the ODA using # oakcli create database -db <db-name> a template is used to set a couple of DB parameters like e.g. _datafile_write_errors_crash_instance=FALSE _db_writer_coalesce_area_size=16777216 _disable_interface_checking=TRUE _ENABLE_NUMA_SUPPORT=FALSE _FILE_SIZE_INCREASE_INCREMENT=2143289344 _gc_policy_time=0 _gc_undo_affinity=FALSE db_block_checking=’FULL’ db_block_checksum=’FULL’ db_lost_write_protect=’TYPICAL’ filesystemio_options=’setall’ parallel_adaptive_multi_user=FALSE parallel_execution_message_size=16384 parallel_threads_per_cpu=2 use_large_pages=’ONLY’ In recent projects I saw a couple of DBs running on ODA, which did not have (all) those parameters set, because the DBs were migrated from a non-ODA-platform and the customer took over…

 
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Stéphane Haby

Migration to SQL Server 2016 with deprecated data types and Full-Text

By | Database Administration & Monitoring, Database management | No Comments

A few weeks ago, I prepared a migration from SQL Server 2008 to SQL server 2016, I came across a case with deprecated data types and a Full-Text activated on these columns. To simulate this scenario, I downloaded and installed the Data Migration Assistant(DMA). Make sure that the .Net Framework 4.5 is installed on your machine before starting the installation of the DMA. After the installation, you start the application which is very simple to…

 
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Stéphane Haby

SQL Server 2016: patching CU with R Services

By | Database Administration & Monitoring, Database management | No Comments

As a good DBA, I begin to be up to date with all Cumulative Update (CU) by my customers. It is the first time that I run an update for SQL Server 2016 with the CU 3. I download the CU on Microsoft website and I begin my patching campaign on all SQL server 2016 instances. The first one is quick & successful. The second one, with R Services, is a little bit different. After,…

 
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Eric Simbozel

Oracle Database to SQL Server 2016 TCO Analyzer

By | Cloud, Database management | No Comments

Today, many enterprises are striving to transform their IT organization from a cost center into a strategic asset and looking for ways to get more value from their application and data platform investments. To deliver on this vision, Microsoft SQL Server 2016 – via its on-premises, cloud, or hybrid deployment options – provides customers with significantly lower total cost of ownership (TCO) compared to existing Oracle DB platform. How to know the real difference in…

 
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Joël Cattin

PostgreSQL 10 Beta 1 : pg_hba_file_rules view

By | Database Administration & Monitoring, Database management | No Comments

This small blog to share a helpful stuff with the pg_hba.conf file : The pg_hba.conf file is the central configuration file to control client authentication. It is located in the database cluster’s data directory : postgres@ppas01:/u02/pgdata/PG10BETA1/ [PG10BETA1] ll pg_hba.conf lrwxrwxrwx. 1 postgres postgres 59 Jun 30 10:19 pg_hba.conf postgres@ppas01:/u02/pgdata/PG10BETA1/ [PG10BETA1] When you add or modify an entry in this file, you have to reload the cluster to take the changes in account : postgres@ppas01:/u02/pgdata/PG10BETA1/ [PG10BETA1]…

 
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