Part Six: Deploying High Availability Applications in Oracle Cloud Infrastructure—Oracle Management Servers

management servers

This is the sixth in a series of blog posts, that covers the details to deploy the Oracle Management Servers for a high available set up of Oracle Enterprise Manager 13.5 using Oracle Cloud Infrastructure‘s resources.   Recap This is…

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ORA-19665: Size in File Header Does Not Match Actual File Size of String


I received the above message related to an ORA-7445 on my database: ORA-07445: exception encountered: core dump [kcflfi()+1016] [SIGFPE] [Integer divide by zero] [0x10053AD10] [] []     After some checks, I noticed the following: SQL> select file_name, bytes…

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CVE-2021-44228 and Your Oracle E-Business Suite/Fusion Middleware Systems


For many of us, the recent log4j vulnerability (CVE-2021-44228) became a severe headache this past weekend. I thought we’d publish a summary of some of our findings gathered so far. We’ll  keep it updated with news and details published by…

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ExaCC vs. ExaCS – Which One is Right for You?

ExaCC vs. ExaCS

Exadata has been Oracle’s gold standard platform for running mission-critical Oracle databases for over a decade. Oracle is extending the availability of Exadata onto the cloud by offering it in two flavors: Exadata Cloud @ Customer (ExaCC) and Exadata Cloud…

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Exadata Health Check: My Top 5 Tools and Features

exadata health check

From ORAchk/EXAchk/ODAchk, Database Security Assessment Tool (DBSAT) and Hang Manager, to Cluster Health Advisor (CHA), Cluster Verification Utility (CVU), Memory Guard and Tracefile Analyzer (TFA), Oracle DBAs have an abundance of great tools at their fingertips. Another plus is there’s…

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Exadata: Automating Compliance Checks


I wanted to share a brief summary–a cheat sheet–to highlight the Autonomous Health Framework (AHF) setting and how we use this great tool in database installations. AHF is an out-of-box solution that provides automated monitoring and proactive issues detection. If…

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OEM 12.5: Tablespace Allocation Metric Not Collected—Agent Is Running but Not Ready

OEM 12.5

I ran across an interesting case within OEM 12 (Oracle Enterprise Manager) Release 5. A client reported the “tablespace allocation metric” was not being updated on OEM for a specific database. In this case, the most recent gathering was done…

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Oracle Exadata ASR General Troubleshooting

oracle exadata asr troubleshooting

Oracle Auto Service Request (ASR) is a secure, scalable, customer-installable software feature of warranty and Oracle Support Services that provides auto-case generation when common hardware component faults occur. I thought I’d share how we monitor the ASR manager process and…

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Part Five: Deploying High Availability Applications in Oracle Cloud Infrastructure— SSL Certificates and Load Balancer Setup

load balancer

This is the fifth in a series of blog posts that covers setting up the load balancer for a high available setup of Oracle Enterprise Manager 13.5 using Oracle Cloud Infrastructure’s resources.   Recap This is the fifth of a…

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Database Upgrade Fails With “unexpected error in validate_credentials”

unexpected error

This is a blog post about an issue that can occur during a database upgrade and produces a misleading error message. If you’re already aware of it, the workaround is trivial. However, when it happened to me during the testing…

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