Transaction Guard | Application Continuity | DML Failover in RAC 19c
Introduction:Starting from 12c TAF can failover DMLs to the available nodes on a RAC environment in case of any interruption happens to it including node/service/network failure. This feature is called...
View ArticleORA-28040: No matching authentication protocol
Problem:When connecting from Oracle Client 11g to an 18c DB or higher it throws this error:ORA-28040: No matching authentication protocolAnalysis:Starting from 18c SQLNET.ALLOWED_LOGON_VERSION_SERVER...
View ArticleCRS-4000: Command Start failed, or completed with errors
Problem: While restarting the clusterware on one cluster node I got this error:[root@fzppon06vs1n~]# crsctl start clusterCRS-2679: Attempting to clean 'ora.ctssd' on 'fzppon06vs1n'CRS-2672: Attempting...
View ArticleA Summary of The Remarkable New Features in 12c [12.1 & 12.2]
I intended to post about 19c new features, but thought that most of DBAs have their productions on 11g and it will be informative if I cover 12c [12.1 & 12.2] new features first "with the...
View ArticleDBA Bundle V5.5
The latest version of DBA BUNDLE V5.5 is now ready, you can download it from here:https://www.dropbox.com/s/k96rl0f4g39ukih/DBA_BUNDLE5.tar?dl=0The complete...
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"virtual circuit wait" Wait Event in AWR on a Dedicated Architecture Server
Problem:I noticed "virtual circuit wait" wait event in the AWR report for one of the databases in the TOP 5 Wait Events:Analysis:Honestly I didn't know what this event for, I googled it and landed on...
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New Script For Exporting Data
Download link:https://www.dropbox.com/s/hk0pfo2tanop35r/export_data.sh?dl=0Introduction:Few years back I've shared a script to export data on Oracle DB, it was lacking some features like exporting...
View ArticleDBA BUNDLE V5.6
New features in Bundle 5.6export_data.sh script: For exporting data has been completely re-coded to come with the following new features:- Execution of the export will run in the background "nohup...
View ArticleThe DBA Guide For Managing Oracle Database on Amazon RDS in One Page!
Some Oracle database administration tasks are really challenging to perform on AWS RDS, this is because AWS doesn't provide you a full DBA account to use, but provides a master account that can perform...
View ArticleMaximum Availability Architecture For New Databases
Just thought it may be helpful if I share the major points of the Maximum Availability Architecture I'm following. It will be difficult to provide references as I've gathered/developed these points...
View Article19c Clusterware fail to Startup due to CRS-41053: checking Oracle Grid...
I had a 19c cluster node crashed and the clusterware failed to startup due to this error:[root@fzppon05vs1n ~]# crsctl start crsCRS-41053: checking Oracle Grid Infrastructure for file permission...
View Articledbalarm Script Updated!
I've added one more feature to the system monitoring script dbalarm to monitor the inodes number on each mounted filesystem on the system to provide an early warning before the inodes number get...
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CRS-6706: Oracle Clusterware Release patch level ('3291738383') does not...
Problem: After patching an Oracle 19.3 GRID_HOME of an Oracle Restart setup, with 19.5 RU patch [30125133], I was not able to start up Oracle Restart due to this error:# $GRID_HOME/bin/crsctl start...
View ArticleDuplicate of a Standby DB fails with ORA-19845
While creating a Standby database on a RAC environment from another RAC database using duplicate method I was getting this weird error:RMAN-00571:...
View ArticleOEM 13c Agent installation failed with: plugins.txt not found. The Management...
Problem: At the end of an OEM 13c agent manual installation on one of the servers I got this message:Finished post install Plugin txt: Inside if , is empty /u01/oracle/agent13c/plugins.txt not found....
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Create a Read Only EM Account on Cloud Control 13c Viewing Databases...
Creating a read only EM account along with viewing databases performance pages and generate AWS and ASH reports looks a piece of cake task, but this took me long time to figure it out, so I thought to...
View Article19c Grid Infrastructure Installation when running root.sh with PRKH-1010 :...
Problem:While executing root.sh during a 19c Grid Infrastructure on a two RAC nodes I experienced this error:2020/05/18 10:22:47 CLSRSC-594: Executing installation step 18 of 19: 'ConfigNode'....
View ArticleRe-execution od Duplicate command fail on 19c with RMAN-06054: media recovery...
Problem:On a 19.5 database, I was trying to duplicate a database from an RMAN backup, first time the duplicate failed after restoring 90% of the datafiles due to space limitation on the underlying...
View Article18c Remarkable New Features
18c is the new name of 12.2.0.2, In 2018 Oracle started to name the new DB versions represent the year the product was released on. I've already covered the top remarkable new features of 12.1 and...
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19c Remarkable New Features
Oracle 19c is packed up with lots of cool features, I've summarized the significant ones in below categories.Support:[Supported untill 2027. As per Note 742060.1--which keeps changing] Performance...
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