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GoldenGate 12.2.0.2 installation in a Grid infrastructure12cR2

This post is a demonstration on how to deploy a fully supported Oracle GoldenGate as cluster resources. We are going to use the Oracle Grid Infrastructure Agents, called XAG to integrate the GoldenGate instance within our cluster as a cluster(…)

Experiencing update statistics on a big table with circuitous ways

This is my first blog of this new year and since a while by the way. Indeed, last year, I put all my energy to realign my Linux skills with the new Microsoft’s strategy that opens SQL Server to Open(…)

12c Multitenant internals: PDB_PLUG_IN_VIOLATIONS

By Franck Pachot . In the previous post https://www.dbi-services.com/blog/12c-multitenant-internals-pdb-replay-ddl-for-common-users I've done some DDL on a common user to show how this is replayed later for PDBs that were not opened at that time. But what happens(…)

12c Multitenant internals: PDB replay DDL for common users

By Franck Pachot . In multitenant, you can create common Users, Roles, and Profiles. You create them in CDB$ROOT, with the CONTAINER=ALL clause (which is optional because it is the only possible value when connected to CDB$ROOT) but they are(…)

Drop PDB including datafiles may keep files open

By Franck Pachot . I like that Oracle drops the datafiles from the operating system when we remove them from the database (with drop tablespace or drop pluggable database) because I don't like to have orphean files remaining in the(…)

12cR2 Subquery Elimination

By Franck Pachot . More and more we can see crazy queries generated by ORM frameworks or BI query generators. They are build to be easily generated rather than being optimal. Then, the optimizer has to implement more and more(…)

Oracle Licensing (R)evolution with VMware

In 2015 I wrote a blog named “All you need to know about Oracle Database licensing with VMware”. This blog generated lots of comments and hopefully helped some DBAs and IT Managers understanding the potential issues that they(…)

Online datafile move in a 12c dataguard environment

By Mouhamadou Diaw Oracle 12c introduces moving online datafile. One question we might ask is what about moving datafile online in a dataguard environment. In this blog we will do some tests Below our configuration, we are using oracle(…)

Oracle 12.2 Dataguard : PDB Flashback on the Primary

By Mouhamadou Diaw The last day I was discussing with one colleague about database flashback for a pluggable database in a dataguard environment. I did some tests and I present results in this blog. Below our broker configuration. Oracle(…)

Automate OVM deployment for a production ready Oracle RAC 12.2 architecture – (part 02)

In this post we are going to deploy a R.A.C system ready to run production load with near-zero knowledge with R.A.C, Oracle cluster nor Oracle database. We are going to use the “Deploy Cluster Tool” which is provide by Oracle(…)