Database management

Case of monitoring snapshot replication from the subscriber side

I don’t work often with SQL Server replication. The main reason is that the number of customers that use replication is pretty low and each time that I have to deal with it, it’s a good opportunity to improve my(…)

Is CDB stable after one patchset and two PSU?

By Franck Pachot . There has been the announce that non-CDB is deprecated, and the reaction that CDB is not yet stable. Well. Let’s talk about the major issue I’ve encountered. Multitenant is there for consolidation. What is the major(…)

OracleText: deletes and garbage

By Franck Pachot . In the previous post we have seen how the OracleText index tables are maintained when new document arrives: At sync the new documents are read up to the available memory and words are inserted(…)

OracleText: inserts and fragmentation

By Franck Pachot . I plan to write several posts about OracleText indexes, which is a feature that is not used enough in my opinion. It’s available in all editions and can index small text or large documents to(…)

SQL Server monitoring with nagios: installation

Nagios is an IT Infrastructure monitoring solution which is able to monitor SQL Server instances with a specific plugin. I have installed this plugin to test those functionalities and I will explain here how to do it. Prerequisites installation(…)

Considerations about SQL Server database files placement, Netapp storage and SnapManager

When you install SQL Server, you have to consider how to place the database files. At this point you will probably meet the well-known best practices and guidelines provided by Microsoft but are you really aware of the storage vendor(…)

Security via policies

Few weeks ago, I presented the session on security via Policies for “Les journées SQL Server 2014”, organized by the French SQL Server User Group (GUSS) in Paris. I promised to post our policies script(…)

Never gather WORKLOAD stats on Exadata…

By Franck Pachot . For Exadata, oracle has introduced an ‘EXADATA’ mode which sets a high transfer rate (with IOTFRSPEED as in NOWORKLOAD statistics) and set a MBRC (as in WORKLOAD statistics). Those values are set rather than gathered(…)

Oracle multitenant dictionary: rowcache

By Franck Pachot . I’ve not finished with my investigation on 12c multitenant dictionary. Here, I’m checking how metadata links are managed by the dictionary cache (aka rowcache). As I did previously, I’ll create a metadata link function(…)

Flush one SQL statement to hard parse it again

By Franck Pachot . If you want a statement to be hard parsed on its next execution, you can flush the shared pool, but you don’t want all the cursors to be hard parsed. Here is how to flush(…)