Ahmed Aboulnaga - Chronicles of Technology (Page 6)

Ahmed Aboulnaga

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, 2019 10:25:07 AM MDT> <Error> <Console> <soahost1> <

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_server1.out is: [2019-09-24T21:58:33.853-06:00] [osb_server1] [ERROR] [OSB-381304] [oracle.osb.transports.main.httptransport]

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 best to configure these scripts to force=true. This only takes effect when you manually

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 set of instructions can be used if you decide to use an alternate WebLogic account as well.

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, 2019 9:27:41 PM EDT> <Error> <oracle.as.jmx.framework.generic.spi.

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 not) have been related to that. This is the snippet from the output of startWebLogic.

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 customize email notification in OEM Cloud Control 12c/13c, login as SYSMAN and navigate to Setup >

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_152 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US

Running RDA for Oracle Fusion Middleware 12c

Running RDA for Oracle Fusion Middleware 12c

Never ran an RDA [http://www.oracle.com/us/support/software/premier/remote-diagnostics-agent-068525.html] (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 ~/oracle_common or ~/utils folder. If not

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 files. In one particular instance, the installation of an OEM Agent 13.2 failed, but there was

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) 12c export PS1="\u@\h:\$PWD> " export DISPLAY=:1 export MW_HOME=/u01/oracle/

Red Hat OpenShift Overview

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, I'll give an introduction to OpenShift, with a series of follow ups that give examples

Always Disable Auto Licensing in OEM Cloud Control

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 licensed separately. By default, the OEM Cloud Control product allows you to install and monitor any target

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 on the second host on the command line via the startManagedWebLogic.sh script. For example: nohup $DOMAIN_

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> <Critical> <ConsensusLeasing> <BEA-000001> <Server must be started by Node Manager

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 rcu.log file may show entries that look like this: Tue Jul 9 23:55:51.780

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 details. [Deployer:149189]An attempt was made to execute the "activate" operation on an application

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. Essentially, you will need to download Oracle SOA Suite 12.2.13.0 QuickStart [https://www.oracle.

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. ;) And here's a never-before-published fact... the original photo I submitted was with me

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 OSB project was developed against the DEV server, where the OSB cluster name was called osb_cluster.

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 a concept is not intended to provide OLTP functionality. What is blockchain ideally used for? Simply put,

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}/oracle_common/upgrade/bin ./ua -readiness Sample output: [2019-06-29T17:32:42.603+00:00] [Framework] [NOTIFICATION] [upgrade.

Blockchain for Newbies (3 of 5)

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 (by virtue of advanced cryptography), and transparent (can be looked up and validated). ________________________________________ Click here

Blockchain for Newbies (2 of 5)

Let's take the example of the buying and selling of land. How would you maintain this information to ensure that there is an unalterable audit trail? Traditional Database In a traditional database, this can be represented as a table as shown here. Every transaction is logged as a