Oracle

Oracle 18c Grid Infrastructure on Windows Server

By Mouhamadou Diaw Oracle Grid Infrastucture can be installed on Windows platform. The steps are the same that on other platforms. In this blog we are going to install Oracle GI 18c on Windows 2016.I have two disks on my(…)

Direct NFS, ODM 4.0 in 12.2: archiver stuck situation after a shutdown abort and restart

A customer had an interesting case recently. Since Oracle 12.2. he got archiver stuck situations after a shutdown abort and restart. I reproduced the issue and it is caused by direct NFS since running ODM 4.0 (i.e. since 12.2.). The(…)

When you change the UNDO_RETENTION parameter, the LOB segment’s retention value is not modified

Below, I will try to explain, a particular case for the general error : ORA-01555 snapshot too old error.. Normally, when we have this error, we are trying to adapt the retention parameters or to tune our queries. SQL> show(…)

SQL Tuning – Mix NULL / NOT NULL Values

One of the difficulty when writing a SQL query (static SQL) is to have in the same Where Clause different conditions handling Null Values and Not Null Values for a predica. Let’s me explain you by an example : Users(…)

How to patch your ODA lite to 18.3.0.0.0

Even you don’t need 18c, or you’re not ready for this release, this patch will also update your 11gR2, 12cR1 and 12cR2 databases to the latest PSU available on ODA, it means for example the patchset from last July if(…)

Create a primary database using the backup of a standby database on 12cR2

The scope of this blog will be to show how to create a primary role database based on a backup of a standby database on 12cR2. Step1: We are assuming that an auxiliary instance has been created and started in(…)

New search function for Oracle database features

Oracle released a new way to search for database features, and it is ...

Italian Oracle User Group Tech Days 2019

The Italian Oracle User Group (ITOUG) is an independent group of Oracle enthusiasts and experts which work together as volunteers to promote technical knowledge sharing in Italy.

Recover a corrupted datafile in your DataGuard environment 11G/12C.

On a DG environment, a datafile needs to be recovered on the STANDBY site, in two situations : when is deleted or corrupted. Below, I will explain  how to recover a corrupted datafile, in order to be able to(…)

Restart a failed transportable tablespace import during a cross platform incremental backup migration

I’m currently working in a project to migrate a 11g-Datawarehouse-database from Solaris to Linux Intel (Endian-change). We do use the cross platform incremental backups method as described in My Oracle Support Note 1389592.1 for that. I.e. incremental backups are(…)