Amazon Web Services (AWS) : EC2-User Data
EC2 - user data is one of the seldom used features, yet a powerful feature. It is basically a simple script which can is executed at boot time by the...
Tuesday, August 27, 2019
Oracle Exadata: chrony Daemon (release 19.1)
Release 19.1 of Exadata has taken a leap in using chrony daemon instead of age old written NTP daemon and protocol. You will not find any NTP daemon installed once...
Friday, August 23, 2019
Amazon Web Services (AWS) : Budget
One of the best feature of learners is the AWS budget feature. this feature sends alerts to you when you reach a certain criteria of Budget. For example if you...
Wednesday, August 21, 2019
Oracle Exadata: How to check if Flash Cache is Write Back or Write Through
This is one of the questions which newbee's into exadata ask me quite often that how to know if flashcache is Write Back or Write Through. Well the answer is...
Oracle Database: TFACTL Blackout ORA-600/7445/700
tfactl or oracle's trace file analyzer utility can be really helpful sometimes, and also a lot of pain in many, when it sends a lot of alerts some of which...
Tuesday, August 20, 2019
Oracle Enterprise Manager: How to Supress 'EM Event: Warning: - User SYS logged on '
User Logged on can be really pain as it makes a lot of noise, It is one of the collected metrics without any threshold and will generate a warning or...
Oracle Enterprise Manager : Internal error detected: oracle.sysman.gcagent.task.TaskZombieException
I was getting a lot of error messages/incidents and alerts stating 'Internal error detected: oracle.sysman.gcagent.task.TaskZombieException' in my Enterprise Manager (Release 13cR2) The right way should be to find out what...
Oracle Exadata: How I removed specific Alerts (Diagnostic Package cannot be uploaded to ASR server)
On a weekly basis, I was getting emails (after patching to release 18) that Diagnostic Package. I then checked with Oracle about this and found out this is a new...
Friday, August 16, 2019
Oracle Exadata: DBM-02643: DROP ALERTHISTORY command did not include all members of the alert sequence for *_*
In this blog I am going to discuss an error message which you might get when dropping individual alerts via dbmcli or cellcli in Exadata if you try to drop your...
Friday, August 9, 2019
Oracle Enterprise Manager : java.lang.OutOfMemoryError: Java heap space
If you are facing a lot of issues with Agent crashing in EM 12c/13C then probably you are running out of memory. An issue which is prominently seen on servers...
Thursday, August 8, 2019
Oracle Exadata: How to find Serial # (to Put in Service Request)
In this blog I am going to talk about, how to find out the serial number of Exadata. it is a single command, which can be run from any node...
Wednesday, August 7, 2019
Oracle Exadata : AIDE (Advanced Intrusion Detection System)
AIDE (Advanced Intrusion Detection System) is basically a utility which keeps the database of all file system files on the server and alerts you via e-mail (as configured) what files...
Tuesday, August 6, 2019
Oracle Exadata / ODA : How to find which version of engineered system you are running
A common question which new comers ask me is how to find out which version of Engineered system are we running. The answer is easy and straight forward. Just one...
Friday, August 2, 2019
Oracle Database: Permissions to Execute Job Class
There is a great mis conception in DBA's who primarily work on OLTP about Job classes. Job classes are one of the essentially used components in job definitions which people...
