Log Buffer #457: A Carnival of the Vanities for DBAs
This Log Buffer Edition begins with some great blog posts from Oracle, goes through SQL Server and then ends with MySQL.Oracle:Ruby-oci8 is a ruby interface for an Oracle Database.Another python graph...
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Securing Oracle Monitoring and Backup Scripts
BackgroundAlmost every DBA writes and uses various custom scripts to monitor and backup their Oracle databases. However, finding the optimal and most secure way to connect to the database is often not...
View ArticleIssues with Oracle Secure External Password Stores
BackgroundIn the previous article, I covered the basics of how to remove database passwords (credentials) from Oracle monitoring or backup scripts and how to instead secure them using a “Secure...
View ArticleLog Buffer #458: A Carnival of the Vanities for DBAs
This Log Buffer Edition covers various useful tips and tricks from blogs for Oracle, SQL Server and MySQL.Oracle:pstack(or thread stack) for Windows to diagnose Firefox high CPU usageWith the...
View ArticleExpert Insights: Oracle NET Troubleshooting for DBAs
Troubleshooting connection issues with Oracle SQL*Net can be difficult at times due to the many options that can be taken during configuration. One of the options is where the file tnsnames.ora may be...
View ArticleAn UNDO in a PDB in Oracle 12c?
According to the Oracle 12cR1 documentation and concepts, it is 100% clear that there can be only one UNDO tablespace in a multitenant architecture and it is at CDB level; thus, a PDB cannot have any...
View ArticleNew ORAchk 12.1.0.2.6 beta
Oracle recently released new beta 12.1.0.2.6 version for the ORAchk utility. If you are an Oracle DBA and still not friendly with the utility, I advise you to try it out. In short, the utility is a...
View ArticleOracle RAC on Azure
Microsoft Azure provides an acceptable and affordable platform for a training environment. I am an Oracle DBA, and use it to test functionality, new technologies and features of different Oracle...
View ArticleLog Buffer #460: A Carnival of the Vanities for DBAs
This Log Buffer Edition covers blog posts from Oracle, SQL Server and MySQL for this week.Oracle:APEX shuttle item with one directionWondering about which tasks and work products are essential for your...
View ArticlePRKO-2002 : Small Things, Large Shadows
This quick and short blog post is a reminder to remember the syntax. I was just trying to bring down local listeners at half rack of Exadata (11gR2) to perform some maintenance. The best way to...
View ArticleGoldenGate 12.2 Big Data Adapters: part 1 – HDFS
December 2015 brought us a new version of GoldenGate, and a new version for Big Data adapters for the GoldenGate. Let’s have a look at what we have now and how it works. I am going to start from the...
View ArticleChanges to DBCA Patch Application Behaviour Causes PDB Cloning to Fail
BackgroundA test upgrade from 11g to 12c and conversion to a container and pluggable database recently pointed out some important 12c behavior differences with respect to the DBCA and whether or not it...
View ArticleGoldenGate 12.2 Big Data Adapters: part 2 – FLUME
In this blog post we continue our review of the new Oracle GoldenGate Big Data adapters. In the first part of the series I tested the basic HDFS adapter and checked how it worked with some DML and DDL....
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Amazon Database Migration Service – first try
Recently, checking Amazon Web Services, I stumbled upon a service I hadn’t tested before. It was Data Migration Service (DMS). I read documentation and checked other resources. I found a good, fresh...
View ArticleGoldenGate 12.2 Big Data Adapters: part 3 – Kafka
This post continues my review of GoldenGate Big Data adapters started by review of HDFS and FLUME adapters. Here is list of all posts in the series:GoldenGate 12.2 Big Data Adapters: part 1 –...
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Why You Should Consider Moving Your Enterprise Application to the Oracle Cloud
If you’ve decided to migrate your Oracle enterprise applications to the public cloud, it’s a good idea to consider Oracle Cloud alongside alternatives such as Amazon Web Services (AWS) and Microsoft...
View ArticleMore Fun With Oracle Timestamp Math
Timestamp MathSeveral years ago I wrote an article on Oracle date math. Amazingly, that article was still available online at the time of this writing.Working With Oracle DatesAn update to that article...
View ArticleEnabling Large Pages on Oracle Database 11g running on IBM AIX
For implementing Large Pages on AIX first you will need to choose large page size at OS level. On AIX you can have multiple large page sizes of 4KB, 64KB, 16MB, and 16GB.In this example we will be...
View ArticleMind your rdbms/audit on 12c
Recently we’ve ran into an interesting question from one of our clients. They were seeing messages of the following form in syslog: "Aug 11 11:56:02 ***** kernel: EXT3-fs warning (device ******):...
View ArticleOracle Live SQL: Explain Plan
We’ve all encountered a situation when you want to check a simple query or syntax for your SQL and don’t have a database around. Of course, most of us have at least a virtual machine for that, but it...
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