Blog | Pythian | Oracle (17)

Oracle

Performance issues with the Sequence NEXTVAL call

Is SELECTing from a sequence your Oracle Performance Problem? The answer to that question is: it might be! You wouldn't ...

MySQL

Creating a test lab using VirtualBox / NAT networking

My job is almost completely reliant upon my ability to perform work in lab of virtual machines. Almost every action ...

Oracle

ORA-28043: Invalid bind credentials for DB-OID connection

Problem Statement Have you ever encountered this error connecting to a DB using global authentication against OID? Was ...

Oracle

Tracking ASM Metrics

Collecting ASM IO Metrics If you are an Oracle DBA, then it is quite likely that Oracle ASM is used as the storage ...

Oracle

The power of the Oracle Database Proxy authenticated connections

We recently received this inquiry from a client: "C an an Oracle database account support two passwords at once so we ...

Oracle

Part 1: Oracle cloud database backup service

Oracle Cloud Database Backup Service (ODBS) This is part 1 of 3 in a series on "Getting Started with Oracle Cloud ...

Oracle

Oracle EBS R12.2: Restarting online patching enablement patch

If you are in process of upgrading to Oracle E-Business Suite 12.2.4, you would have went though this critical phase in ...

Oracle

OLTP type 64 compression and 'enq: TX - allocate ITL entry' on Exadata

Recently we've seen a strange problem with the deadlocks at the client database on Exadata, Oracle version 11.2.0.4. ...

Oracle

Using the ILOM for troubleshooting on ODA

I worked on root cause analysis for a strange node reboot on client's Oracle Database Appliance yesterday.

Oracle

Part 2: Oracle Cloud Backups to AWS S3

Getting Started with Oracle Cloud Backups - Amazon Web Services (AWS) This is part 2 of a 3 part series on "Getting ...

Oracle

Recovering an Oracle Database with Missing Redo

Background I ran into a situation where we needed to recover from an old online backup which (due to some issues with ...

Oracle

What does "backup restore throttle speed" wait mean?

After migrating a 10g database to 11g, I asked the Application team to start their tests in order to validate that ...

Oracle

Slimming Down Oracle RAC 12c's resource footprint

I've been working on setting up a demo for my upcoming presentation on application continuity at RMOUG training days ...

Oracle

Oracle Database 12c Patching: DBMS_QOPATCH, OPATCH_XML_INV, and datapatch

Background Oracle Database 12c brings us many new features including: the long needed ability to run OPatch and query ...

Oracle

Patching fun: GI and database patches

Intro So, it has been some time since I have patched a database. Patching seemed necessary in a 12c database used for ...

Oracle

Oracle Database: script to purge aud$ table using dbms_audit_mgmt package

With an increase in requirements on database security, database auditing is part of most production databases nowadays. ...

Oracle

Licensing Oracle in a public cloud: the CPU calculation impact

Introduction: The Virtual Core Discrepancy Update 2015-May-11: Jean-Michael dug up another Amazon Web Services document ...

Oracle

Migration of Oracle Database to Amazon RDS using Golden Gate

Migrating Oracle to Amazon RDS with Minimal Downtime Amazon RDS is a web service used to manage databases, like Oracle, ...

Oracle

Autoconfig in Oracle EBS R12.2

The evolution of autoconfig in oracle e-business suite All seasoned Oracle Apps DBAs know that Autoconfig is the master ...

Oracle

Magic of "\d" in Vertica

A quick neat way to list down important and oft-needed information like names of databases, schemas, users, tables, ...

Oracle

asmcmd> a better "du"

I discovered ASM with a 10.1.0.3 RAC running on Linux Itanium and that was a big adventure. At this time there was no ...

Oracle

Making existing SQLPLUS Scripts 12c and Container DB (PDB) compatible

Oracle 12c introduces new catalog features including CDB_ dictionary views (which include a CON_ID column) superseding ...

Oracle

EM12c : Login to GUI with the correct password causes authentication failure

Troubleshooting an EM12c Login "Authentication Failed" Error So the other day I was trying to log in to my EM12c R4 ...

Oracle

Weblogic patch rollback issues in Oracle EBS R12.2

When you try to rollback a weblogic patch in Oracle EBS R12.2, you might run into issues similar to below:

Oracle

How to migrate a Database using GoldenGate

There are many ways to migrate a database from A server to B server like Datapump, RMAN,etc. Using the combination of ...

Oracle

Fixing Windows RAC listener to listen on IP address of Hostname

Background Recently, there was an issue after a node was added to an existing Windows RAC cluster. After everything was ...

Oracle

Merging Apps Patches in Oracle EBS R12.2

It’s public knowledge that the traditional patching tool in Oracle EBS “adpatch” is replaced with “adop” utility. It’s ...

Oracle

Performance problems with Dynamic Statistics in Oracle 12c

Test Case Preparation I’ve been making some tests recently with the new Oracle 12.1.0.2 In-Memory option and have been ...

Oracle

12c: How to Restore/Recover a Small Table in a Large Database

Introduction As a DBA, you will receive requests from developers or users, indicating that they deleted some data in a ...

Oracle

An introduction to extended data types in Oracle 12c

Introduction One of the lesser known new features that comes as a boon to many developers and DBAs is the provision of ...

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Performance issues with the Sequence NEXTVAL call

Creating a test lab using VirtualBox / NAT networking

ORA-28043: Invalid bind credentials for DB-OID connection

Tracking ASM Metrics

The power of the Oracle Database Proxy authenticated connections

Part 1: Oracle cloud database backup service

Oracle EBS R12.2: Restarting online patching enablement patch

OLTP type 64 compression and 'enq: TX - allocate ITL entry' on Exadata

Using the ILOM for troubleshooting on ODA

Part 2: Oracle Cloud Backups to AWS S3

Recovering an Oracle Database with Missing Redo

What does "backup restore throttle speed" wait mean?

Slimming Down Oracle RAC 12c's resource footprint

Oracle Database 12c Patching: DBMS_QOPATCH, OPATCH_XML_INV, and datapatch

Patching fun: GI and database patches

Oracle Database: script to purge aud$ table using dbms_audit_mgmt package

Licensing Oracle in a public cloud: the CPU calculation impact

Migration of Oracle Database to Amazon RDS using Golden Gate

Autoconfig in Oracle EBS R12.2

Magic of "\d" in Vertica

asmcmd> a better "du"

Making existing SQLPLUS Scripts 12c and Container DB (PDB) compatible

EM12c : Login to GUI with the correct password causes authentication failure

Weblogic patch rollback issues in Oracle EBS R12.2

How to migrate a Database using GoldenGate

Fixing Windows RAC listener to listen on IP address of Hostname

Merging Apps Patches in Oracle EBS R12.2

Performance problems with Dynamic Statistics in Oracle 12c

12c: How to Restore/Recover a Small Table in a Large Database

An introduction to extended data types in Oracle 12c

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