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Varying Database Benchmark Results
I’ve been asked on numerous occasions why do peoples' database benchmark results often vary. In other words why one observed transaction per second (TPS) value today and sometimes 20% or more off...
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Database Benchmarking Tool Differences
In my last blog titled “Varying Database Benchmark Results” I tried to explain why people can often get varied performance results when running a specific database benchmark multiple times. I attempted...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous posts, we looked at Remote PDB Cloning and...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous posts, we looked at Remote PDB Cloning,...
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Good Database Design
Times change. In the good old days “good” relational database design was rather straight forward, there were simply tables with columns and rows plus rather simple indexing options. Thus database...
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DBAKevlar at Collaborate 2015
Here’s a quick guide to my schedule of sessions at IOUG Collaborate 2015 for this year. I’m looking forward to seeing everyone next week, (I’ll be arriving on Saturday, so I really should say in a...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at the PDB logging clause.In the...
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Oracle 12c CDB Installation now allowed with less options
A very interesting recent development in the Oracle Database 12c world, is that you are now allowed to create a CDB installation with less options. Database options such as RAC, Java, Spatial etc. are...
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Error “Cannot Load Program” for binaries after 12c Installation
After Installation of Oracle Software 12.1.0.2 on IBM-AIX 6.1, I tried to configure the listener and “lsnrctl” command failed with following error. Then tried other commands like sqlplus, tnsping and...
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Re-Adding a Database to the AWR Warehouse Without Losing Historical Snapshots
There may be a reason that one needs to re-add a database to the AWR Warehouse. This is a new opportunity for me to learn and offer assistance, but I’m working off the grid to figure out a solution....
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at the save|discard state...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at the CREATE_FILE_DEST...
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Oracle Database 12c – Immediate Kill Session
Recently we have deployed a new Oracle database 12c for our portal application. One of our developer complained that one of his portal schema session is getting terminated continuously. When we...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at “Rapid Home...
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Database Instance terminated due to ZFS data pool SUSPENDED
On one of the TEST severs there are several databases hosted on one single mount-point configured on single ZFS data pool. We received multiple requests from users that the databases running on these...
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DMU 2.1 released for download on OTN and MOS
What is the DMU? The Oracle Database Migration Assistant for Unicode (DMU) helps you to migrate database character sets to Unicode. This is recommended, for maximum compatibility and extensibility....
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at “Full Database Caching”.One...
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ORA-27211: Failed to load Media Management Library – EMC Networker – Oracle RMAN
Recently one of our DBA configured online database backup on a EMC Networker. But when we execute the backup script then its failed to load the media management library. The below is the error stack...
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New In-Memory Advisor Version
An updated version of the Oracle Database In-Memory Advisor is now available, and the documentation has been updated as well. This Advisor can be used to analyze the existing database workload, and...
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MV Refresh Bug in 12.1.0.2 – SYS.DBMS_SNAPSHOT with FGA enabled
Problem:Recently we upgraded one of our database from 10.2.0.4 to 12.1.0.2 and after upgrade none of Materialized views refresh jobs were running successful and all of them was ending up with below...
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