Refreshable PDB out of sync ORA-00308
When checking the status of the backups of the databases on a baremetal ODA (X8-2-HA) we noticed an error in the RMAN logfiles: This ODA was recently patched to …
Category: DBA Oracle
Migrating Oracle Enterprise Edition database To Standard Edition using Transportable Tablespaces
Introduction Oracle database Standard Edition (SE) has the main features of a RDBMS database and cost significantly less than Oracle Enterprise Edition (EE). Migrating a database from Oracle Enterprise …
“You have to give a little… scripting for 12c+”
or Publishing a cleanup script for Oracle 12c+ At the moment I’m just for fun collecting Linux scripts from my direct colleagues. And while I was busy to think …
Preparation for migrating data to Oracle Virtual Private Database
August 10, 2021
AMIS, Database, Databases, DBA Oracle, Oracle, Oracle 12, SQL, sqlplus, Technology
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 preparation for migrating data to Oracle Virtual Private Database Introduction Recently I was part of a team involved in the preparation of migration data belonging to multiple business …
How to dynamically Schedule EM Blackouts after PatchTuesday
November 7, 2020
Enterprise Manager, AMIS, DBA Oracle, PL/SQL, Platform Technology, Tools
No Comments
In the organization I’m currently working for, the OS-patch schedule depends on PatchTuesday (PT) just as Microsoft, Adobe or Oracle are using. And PatchTuesday is, as you all know, …
A Quick how-to RMAN backup to OCI Object Storage
This is a quick how-to article on setting up RMAN to backup to Object Storage on OCI. This is applicable when you build your on Oracle database on an …
Migrating databases using Dataguard, some pitfalls and observations
My customer needed to migrate to a new set of datacenters, and while other services were able to “lift and shift”, the Oracle RAC database servers had to be …
Migrating an old (10.2.0.4) database to Oracle Cloud with minimal downtime
April 9, 2020
Oracle Cloud, AMIS, Architecture, Cloud, Database, Databases, DBA Oracle, Tools
2 Comments
Unlike most of our posts this post will contain almost no code or examples. But it hopefully will help somebody who ends up to be in the same situation …
Oracle Database: Write arbitrary log messages to the syslog from PL/SQL
Syslog is a standard for message logging, often employed in *NIX environments. It allows separation of the software that generates messages, the system that stores them, and the software that …
Upgrade Failure as Blessing in Disguise?
or The Findings of an Failed Enterprise Manager Upgrade to OEM13.3 When Oracle Enterprise Manager Cloud Control 13.3 (here just called EM 13.3) came available I read the upgrade …
Creating a Report of available ASM candidate disks from the OEM Repository
A while ago I was reviewing the metric extensions of our Enterprise Manager Cloud Control 13.2.0.0, we use to administer a couple of hundred databases. All acceptance and production …
Enterprise Manager Convert to Cluster Database (RAC) fails without showing errors at Pre Configuration phase
Oracle Enterprise Manager Cloud Control 13c provides a wizard to convert a single-instance database to an Oracle RAC database. This requires the Oracle Database Lifecycle Management Pack for Enterprise …
How a double entry for LAST_ARCHIVE_TIMESTAMP can stop your audit purge in 12c
In the last nine month we were busy migrating our 11g databases to 12c rel. 2. Due to time constrictions we decided early in the project to migrate 1:1. …
ORA-31626, (Database-pump)-job does not exist
A short post about the ORA-31626 error. Found out a scheduled export- and import- job was broken in an Oracle Database. Error:Â Â ORA-31626: job does not exist. After checking the …
Crash recovery of Oracle databases using Commvault
Some time ago I published an article about creating a RMAN backup using Commvault. See: https://technology.amis.nl/2018/03/01/creating-rman-backups-using-commvault/Â . In this article I describe how to execute a crash recovery using Commvault. …
Quickly spinning up Docker Containers with baseline Oracle Database Setup – for performing automated tests
Here is a procedure for running an Oracle Database, preparing a baseline in objects (tables, stored procedures) and data, creating an image of that baseline and subsequently running containers …
ORDS: Installation and Configuration
In my job as system administrator/DBA/integrator I was challenged to implement smoketesting using REST calls. Implementing REST in combination with WebLogic is pretty easy. But then we wanted to …
How to fix Dataguard FAL server issues
One of my clients had an issue with their Dataguard setup, after having to move tables and rebuild indexes the transport to their standby databases failed. The standby databases …
The Tale of the Ardent SpringCleaning Maniac (ASM)
or If you want to get rid of stuff, you can always do a good spring-cleaning. Or you can do what I do. Move. – Ellen DeGeneres In order …
Deploying Oracle OEM agents 13c on windows targets (2008 R2) while OMS is on Linux
Situation at customer’s site: OMS 13.2 on Oracle Linux, targets are Windows machines, and a bit ancient: Windows 2008 R2. How to deploy agents on those targets? Several methods …
ODA X6-2M – How to create your own ACFS file system
In this post I will explain how to create your own ACFS file system (on the command line) that you can use to (temporarily) store data. So you have …
ETL using Oracle DBMS_HS_PASSTHROUGH and SQL Server
June 12, 2017
Oracle, Databases, DBA Oracle, ODA, Oracle 12, Performance and tuning, PL/SQL
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While I prefer a “loosely coupled architecture” for replication between Oracle and SQL Server, sometimes a direct (database) link cannot be avoided. By using DBMS_HS_PASSTHROUGH for data extraction the …
Golden Gate 12c and DIY Sequence Replication with PL/SQL
May 5, 2017
Database, Databases, DBA Oracle, Engineered Systems, ODA, Oracle, Oracle 12, PL/SQL
2 Comments
Recently, while migrating AIX 11gR2 Databases to Oracle Linux 12cR1 on an ODA X5-2, our setup of Sequence Replication by Oracle Golden Gate appeared to be faulty. The target …
Dump Oracle data into a delimited ascii file with PL/SQL
This is how I dump data from an Oracle Database (tested on 8i,9i,10g,11g,12c) to a delimited ascii file: Next to the query and the generated filename the Dump_Delimited function …
DIY Parallelization with Oracle DBMS_DATAPUMP
February 23, 2017
Database, Databases, DBA Oracle, Engineered Systems, ODA, Oracle, Oracle 12, PL/SQL
5 Comments
![DIY Parallelization with Oracle DBMS_DATAPUMP]({"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"http:\/\/seattletimes.nwsource.com\/ABPub\/2012\/08\/02\/2018836700.jpg","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"} "DIY Parallelization with Oracle DBMS_DATAPUMP")
Oracle dbms_datapump provides a parallel option for exports and imports, but some objects cannot be processed in this mode. In a migration project from AIX 11gR2 to ODA X5-2 …
How About Oracle Database 12c Threaded_Execution
February 5, 2017
AMIS, Database, Databases, DBA Oracle, Engineered Systems, ODA, Oracle, Oracle 12
No Comments
THREADED_EXECUTION Threaded_Execution is an Oracle Database 12c feature aiming to reduce the number of Oracle processes on LINUX. After setting parameter THREADED_EXECUTION on TRUE and a database bounce, most …
Oracle 12c STIG Password Generator in PL/SQL
January 24, 2017
AMIS, Cyber Security, Database, Databases, DBA Oracle, DevOps, Engineered Systems, ExaData, ODA, Oracle, Oracle 12, PL/SQL, SQL
1 Comment
Creating or modifying an Oracle Database user password can be done by using any standard password generator you can find on the WEB. But I wanted a password to …
Serial database backups using Oracle Enterprise Manager
For several years now, I’ve been a fan of backups controlled by Enterprise Manager (of Grid Control, or Cloud Control, call it what you want). It is relatively easy …
You are in trouble when more than 8 kernel options are enabled in oracle executable
A brief headsup for everyone responsible for maintaining kernel options in the oracle executable. The environment where I discovered this is a 3 node racattack cluster with Oracle GI …
Oracle Cloud – DBaaS instance down for no apparent reason – (how archive log mode and storage shortage forced the instance to its knees)
My Oracle Public Cloud DBaaS instance did not respond. On closer investigation, it turned out to be down. Mounting the database ended with an ORA-3113 End of Communication Channel. …
Using guaranteed restore points to navigate through time
Some months ago I worked on a project where we thought it would be a good idea to use multiple guaranteed restore points to be able to navigate through …
12c DBCA skips database-patching activities
Thanks to colleague Patrick Roozen I learned that there’s a tiny little flaw in Oracle databases 12c patch procedures when using DBUA (upgrade) and DBCA (create custom database) when …
A Short Note on Pesky CSSCAN Results Before a Characterset Change
A client of mine was busy correcting one of his development streets and therefore the NLS charactersets of about 10 11.2.0.4 EE databases had to be changed. Most of …
Security Features of Standard Edition (One) – Part 2
or Some Musings on the Security Implications of Oracle Database Initialization Parameters Still following the steps of a database installation, this article will muse about some Initialization Parameters with …
How-to bulk delete ( or archive ) as fast as possible, using minimal undo, redo and temp
Deleting some rows or tens of millions of rows from an Oracle database should be treated in a completely different fashion. Though the delete itself is technically the same, …
Oracle datapump, advanced compression and licensing
As you may well know, Advanced Compression is an option you have to pay for when using it. But as a DBA you can’t always control the use of …
How-to set the current database schema of an application using a global context
March 9, 2015
Database, Databases, DBA Oracle, Frontend technology, Languages, Oracle, Oracle 12, Oracle Application Development Framework, PL/SQL, SQL, Technology
No Comments
Question: We have customers who want to work with different database schemas and we want to determine dynamically – depending on a choice during or after login – which …
Security Features of Standard Edition (One) – Part 1
or A closer look on database hosts The last couple of years quite a few organizations had a difficult time and internal costs where a main focal point was …
Cloud Control Agent 12c managing many objects
An Oracle Enterprise Management Agent 12c that has to manage hundreds of objects needs extra tweaking. If not, it will not start, or it will die soon, leaving you …
The caveats of running .sql scripts with GUI tools
One of my pet peeves is people using GUI tools like Toad or SQL Developer while running release scripts on test, acceptation or production systems. Actually, pet peeves is …