Oracle Team

PDB Snapshot Carousel with Oracle 21c

By Mouhamadou Diaw In a previous blog , I talked about refreshable PDB technology which can be used to refresh a target PDB. We have seen here how the target refreshable PDB(…)

Important DBCA Parameter if you plan to use Storage Snapshot Cloning in ASM

I am currently working on a customer project to create database clones using storage snapshots. The advantages are obvious, because using a storage snapshot as a clone not only saves space, but is also extremely fast compared to a full(…)

Pluggable Database Snapshots with Oracle 21c

By Mouhamadou Diaw In a previous blog , I talked about refreshable PDB technology which can be used to refresh a target PDB. The target PDB can be in mounted state (mandatory to be refreshed) or(…)

Managing Refreshable Clone Pluggable Databases with Oracle 21c

By Mouhamadou Diaw A refreshable clone PDB is a way to refresh a single PDB instead of refreshing all PDBs in a container as in a Data Guard environment. It consists to make a clone of a source PDB and(…)

Character Sets and Oracle 21c PDBs : How It Works

By Mouhamadou Diaw When creating a database in a multitenant environment we must understand how character set works for CDB and PDBS. In Oracle documentation we can find following lines -When the character set of(…)

Import tnsnames.ora in LDAP directory

This post gives a short intro to directory naming, shows how to import from tnsnames.ora to an LDAP directory. Finally, as an alternative, you get an example how a TNS connection string looks like in ldif file format. LDIF can(…)

How to configure Linux Server to run Oracle Database 19c on Persistent Memory

Introduction to Persistent Memory In the last few years, storage media have become more and more advanced and faster. Today, SSD disks are almost standard as storage and if an Oracle database really has an I/O critical workload, nvme storage(…)

Oracle Partition and Performance of massive/concurrent Inserts

For a customer, I had to check if partitioning improves performance of massive and concurrent inserts. The goal is to execute several Inserts in parallel via dbms_parallel_execute package (my previous blog “parallelize your Oracle Insert with DBMS_PARALLEL_EXECUTE” explains how(…)

Clone Oracle 21c Home

By Mouhamadou Diaw When deploying new Oracle Home on the same server or on a new server, you may use the downloaded Oracle binaries and do an install from scratch as usual. You may then apply any patch you have(…)

ODA KVM Machines : Adding a Network Interface on a Virtual Machine

By Mouhamadou Diaw In a previous blog , I was talking about virtual machines on ODA servers. Sometimes it comes that we want to add another network interface for other purpose. In this blog I(…)