Author: Matheus Boesing

Automatic Graceful Shutdown and Consistent Startup Method for Oracle DB on Linux

Having questions about automatic startup and shutdown is quite common when dealing with new environments or configurations. There is more than one way to implement this depending on the environment configuration, licensing and version. So, here is a summary: 1….

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How to Set up Automatic Startup and Shutdown of an Oracle Database on Linux without Using Oracle-Restart

We have all set up automatic startup and shutdown of an Oracle Database on Linux at some point. I, myself, have made some scripts to do it in the past. However, did you know there is an official way/script for…

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Services [not] Starting Automatically with CRS after Reboot?

Hello all! So, a client asked me to check why his database was not starting with CRS after a reboot. I started investigating and noticed this: On Oracle 11.2, the database auto-start policy in the Clusterware is “restore”, which means…

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Solving an unusual Oracle upgrade issue

I recently came across a very unusual situation. During an upgraded review, I noticed the dba_registry_sqlpatch was empty when it shouldn’t be: SQL> select patch_id, patch_uid, version, action, action_time, status, description from dba_registry_sqlpatch; no rows selected SQL> The expected output…

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How to Set Up Out Of Band Notifications in OEM 13C

So, after an abnormally quiet weekend, I was being paged: Oracle Management Services (OMS) was down! Well, this requires monitoring the monitoring, right? So, how to monitor the monitoring? Oracle Enterprise Manager (OEM) 13c has a feature called Out of…

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AWS’s Top 5 Commands: ALTER SYSTEM and Managing SYS Objects in RDS

We often manage services over EC2, this is not news. But when migrating to Amazon RDS, it’s usual for new users to have issues with performing some administrative actions on the database, especially when it’s done via internal Oracle procedures…

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How to Automate Killing Inactive Sessions with Resource Manager

Are you manually (or via a script) killing idle sessions on your database? As a consequence, your users are getting error “ORA-00028: your session has been killed” and probably getting angry at you. What about doing it automatically, in a…

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Why you should not uninstall Database Vault from a CDB

Now that we are fully into database upgrades, here is an important item to be aware of: As you may know, the Database Vault (DV) option could be reported as not installed in source when converting non-CDB to PDB, and…

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How to fix Error: OMSPatcher finds that previous patching session is not yet completed

When planning a patch for a client’s OMS, I found the following: OMSPatcher finds that previous patching session is not yet completed. Please refer log file “/u01/app/oracle/middleware/cfgtoollogs/omspatcher/28018178/omspatcher_2019-07-09_23-44-58PM_deploy.log” for the previous session and execute the script “/u01/app/oracle/middleware/.omspatcher_storage/oms_session/scripts_2019-07-09_23-44-39PM/run_script_singleoms_resume.sh” to complete the previous…

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How to work around OMS 12.1.0.3 error: Metric evaluation error start – Get dynamic property error

Have you received this error on OMS 12.1.0.3? “Metric evaluation error start – Get dynamic property error,” After performing some research on MOS and a confirmation SR, it seems related to Bug 17575631 CLUSTER DB HOME PAGE ERRORS- REGIONS FETCH…

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