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Ahmed Aboulnaga

Ahmed Aboulnaga

Washington DC •
32 posts •
Coherence

Get Oracle Coherence version

Many Oracle Fusion Middleware products are bundled with Oracle Coherence, either optionally or required by the product you are installing. Often it is necessary to identify the Coherence version.These are the commands

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
WebLogic

Deployment exception because operation cannot be performed until the WebLogic server is restarted

Problem:I tried to create a datasource on Oracle WebLogic 12.1.3, but encountered the following error on the WebLogic Admin Console:The full error stack in AdminServer.log:####<Sep 26,

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
OSB

Getting "Hostname verification failed" in OSB 12c

Problem:When calling a service on Oracle Service Bus (OSB) 12c, I received an SSLKeyException related to hostname verification even though we do not have SSL configured.The entire error stack in osb_

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
3 min read
Article: Compute Cloud Performance Showdown
Cloud

Article: Compute Cloud Performance Showdown

My article titled Compute Cloud Performance Showdown was just published in the latest issue of UKOUG PTK. PTK, which stands for Pass The Knowledge, was formerly Oracle Scene, and is a publication from

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
WebLogic

Force shutdown in stopWebLogic.sh

The WebLogic stop scripts stopWebLogic.sh and stopManagedWebLogic.sh do not "force" a shutdown when being called. This means that you could be waiting indefinitely until all transactions are completed.It is probably

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
OEM

Changing the WebLogic password on OEM Agents

This post describes the steps needing to be done on the OEM Agent if the WebLogic password used to connect has been changed. It needs only be changed once per domain. This same

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
Oracle SOA Suite

Getting continuous "MBean attribute access denied" in SOA logs due to OEM Agent

Recently, we started getting continuous errors every few seconds in our Oracle SOA Suite logs (specifically in the SOA managed server standard out log).The entire exception is shown here:<Sep 11,

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
5 min read
WebLogic

WebLogic AdminServer startup hanging at "Initializing self-tuning thread pool"

Starting up the AdminServer on Oracle WebLogic Server 11g hung indefinitely at the log entry "Initializing self-tuning thread pool". There was planned maintenance on the network, so we suspect it may (or may

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
OEM

Customizing Oracle Enterprise Manager 12c/13c email notifications

The email alerts generated from Oracle Enterprise Manager Cloud Control are not the most appealing visually, with formatting not easy on the eyes and includes a slew of unnecessary information and clutter.To

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
4 min read
JDeveloper

Unresolved IOException when starting up Oracle JDeveloper 12c

Sadly, a recently successful installation of Oracle JDeveloper 12c (12.2.1.3) failed to start up on a desktop virtual machine with the following error being returned:java.version=1.8.0_

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
Running RDA for Oracle Fusion Middleware 12c
RDA

Running RDA for Oracle Fusion Middleware 12c

Never ran an RDA (Remote Diagnostic Agent) before? It is a way to collect comprehensive diagnostic information to provide to Oracle Support.Some Oracle Fusion Middleware installations already have RDA installed under the

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
OEM

Inspect 'em_prereqs_results.xml' for OEM Agent installation errors

In rare cases, the Oracle Enterprise Manager Cloud Control Agent may fail during the installation, and the cause of the installation failure can be found in any of the .err, .log, or .out

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
Oracle SOA Suite

Custom .bash_profile for Oracle Fusion Middleware

I have created some crude custom .bash_profile scripts that I use to make things easy for me after I install some of the various Oracle Fusion Middleware products.Oracle HTTP Server (OHS)

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
3 min read
Red Hat OpenShift Overview
OpenShift

Red Hat OpenShift Overview

OpenShift is a family of containerization software developed by Red Hat and has been around since 2011. However, it has recently gained more steam over the past couple of years.In this post,

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
Always Disable Auto Licensing in OEM Cloud Control
OEM

Always Disable Auto Licensing in OEM Cloud Control

Oracle Enterprise Manager Cloud Control is a free product, but is extremely limited in functionality without paying for the additional management packs. These management packs offer a slew of necessary features and are

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
WebLogic

Modify startManagedWebLogic.sh after unpacking to 2nd host

After packing a WebLogic domain on the first host and unpacking it on the second host, I noticed an interesting behavior.After this was done, I attempted to start up a managed server

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
WebLogic

BEA-000362 and Consensus Leasing in WebLogic

If you start up a WebLogic managed server using the startManagedWebLogic.sh script, you may see the following exception in the logs:<Apr 14, 2019 2:34:42,929 PM EDT>

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
RCU

Getting ORA-01031 "insufficient privileges" during 12.2.1.3 RCU

Problem:When running the Repository Configuration Utility (RCU) for Oracle Fusion Middleware 12.2.1.3, you may receive the following error during the creation process in the GUI:ORA-01031: insufficient privileges The

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
WebLogic

Getting activation error on GridLink data source in WebLogic 12.2.1.3

Problem:When creating a GridLink data source in Oracle WebLogic Server 12.2.1.3, you may receive an activation error.An error occurred during activation of changes, please see the log for

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
JDeveloper

Where to download Oracle JDeveloper 12.2.1.3 for SOA and OSB development

Oracle likes to confuse you sometimes.Are you looking to download Oracle JDeveloper 12c (12.2.1.3.0) to do your SOA and OSB development?You might struggle finding the correct version.

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
Blast from the Past: My Oracle Magazine Interview

Blast from the Past: My Oracle Magazine Interview

Here's a brief interview conducted with me in Oracle Magazine waaaaaay back in 2014.I still stand by my answers! :)And it looks like Oracle heard me and created the Oracle Autonomous Database.

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
OSB

Invalid target for JMS proxy: osb_cluster

Problem:We developed an OSB 11g project that polls from a WebLogic JMS queue. Upon deployment, we received the following error:[WliSb Transports:381515]Invalid target for JMS proxy: osb_cluster Solution:This

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
Blockchain

Blockchain for Newbies (4 of 5)

Still confused? As you embark on your blockchain education journey, undoubtedly some questions still arise.Can I use blockchain to replace my current transactional database?No.Blockchain serves a separate function. Blockchain as

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
2 min read
Oracle SOA Suite

Sample output of the Oracle Fusion Middleware 12.2.1.3 UA readiness logs

Here is a sample output of the Oracle Fusion Middleware 12.2.1.3 upgrade assistant (UA) readiness logs, primarily for reference purposes.The UA can be executed as follows:cd ${MW_HOME}

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
42 min read
Blockchain for Newbies (3 of 5)
Blockchain

Blockchain for Newbies (3 of 5)

Some of the key benefits of leveraging blockchain is that it's distributed (across multiple nodes in the network), immutable (tamper resistant), maintains an audit trail (through the use of a linked chain), secure

  • Ahmed Aboulnaga
    Ahmed Aboulnaga
1 min read
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