“Opinions expressed are solely my own and do not express the views or opinions of my employer.” I upgraded a database from 12.1 to 12.2, from 12.2 to 19.3, and then from 19.3 to 19.15 on an environment with Oracle Restart (HAS). However, after successfully applying the patch and the environment running 19.15, the datapath hanged on the “Installing patches…” part of the script followed by the error ” Died at $ORACLE_HOME/rdbms/admin/catcon.pm line 18217″ after a while. Follow below an example of the description above: The solution to it was…
Author: brunors
Hi! I am Bruno, a Brazilian born and bred, and I am also a naturalized Swedish citizen. I am a former Oracle ACE and, to keep up with academic research, I am a Computer Scientist with an MSc in Data Science and another MSc in Software Engineering. I have over ten years of experience working with companies such as IBM, Epico Tech, and Playtech across three different countries (Brazil, Hungary, and Sweden), and I have joined projects remotely in many others. I am super excited to share my interests in Databases, Cybersecurity, Cloud, Data Science, Data Engineering, Big Data, AI, Programming, Software Engineering, and data in general.
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ORA-15031: disk specification ‘XXXX:XXX40’ matches no disks while starting Oracle Clusterware
I was working in an environment after a reboot of the server that when I tried to startup the Oracle Clusterware on all belonged nodes, I received the following error: After some investigation of the logs, I checked the support package ASMLib to verify the status of the disks as below: Then I confirmed that it has not been possible to gather the status of one of the disks. Therefore, I continue to get more additional information to solve the issue as the current ASMlib is installed, and its logs…
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x0] [PC:0x2425E8B, qkaProjRwo()+139] [flags: 0x0, count: 1]
“Opinions expressed are solely my own and do not express the views or opinions of my employer.” After applying the rollback from the Critical Patch Updates PATCH 33583921 – GI Jan 2022 Release Update 12.2.0.1.220118 at both Oracle RAC Databases 12.2.0.1 and GRID 12.2.0.1, I found the following messages on the alert log of the database: After some investigation, I found that the error “ORA-7445 [kcbm_sim_one()+1288] [SIGSEGV]” is very generic and often the argument [kcbm_sim_one()] is related to many known bugs on the Oracle database from versions 10.1 to 10.4.…
ORA-00609: could not attach to incoming connection ORA-12637: Packet receive failed
I upgraded an Oracle RAC database from 12c to 19c. After a while, I identified that some jobs were having problems running. Therefore, I investigated and found out about the new default feature on the 19c client database that requires tests if Out of Bound breaks are allowed. Thus. Follow below the steps to handle this: The first step was to check the alert.log, and the errors messages were as below: I have also checked traces to understand more about the error, and this is what looked like: From now,…
Oracle Data Guard 12c: ORA-01110: data file 0000: ‘$ORACLE_HOME/dbs/UNNAMED0ZZZ’
“Opinions expressed are solely my own and do not express the views or opinions of my employer.” Oracle Data Guard is a great Oracle product that ensures high availability, data protection, and disaster recovery for enterprise data. However, as with any other product, sometimes there are some issues that appear and it is needed to be solved. Therefore, the post today will be about the error “ORA-01110: data file 0000: ‘$ORACLE_HOME/dbs/UNNAMED0ZZZ’”. Many causes can lead to this error but one that I can point out is when the primary database…
Finding the alert log file anywhere
“Opinions expressed are solely my own and do not express the views or opinions of my employer.” Some database administrators have a hard time finding the alert log file in systems that they are not familiar with. Therefore, I decided to share two simple techniques to find the alert log file regardless of whether you know the system. Thus, the first technique is to check the alert log being connected to the SQL prompt using the x$dbgalertext view that brings the current information of the alert log. Therefore, this SQL…
ORAPWD : Password complexity failed for SYS user
I was creating an Oracle Data Guard environment when I got the following error while I was creating the password file: And the reason behind this error is that Oracle Corporation has been working hard to ensure more security in their database releases. Therefore, from the Oracle database release version 12.2, Oracle has changed some policies within passwords, and due to it, no longer weak passwords are allowed unless you want to. The new requirements about passwords that are allowed can be found in the chapter “3 Configuring Authentication” of…
Implementing Oracle Data Guard Broker 19c in an Oracle Standby RAC Database
Before I start, I would like to do a disclaimer and say that this is a procedure that might help you. However, I do not recommend you test it in a production environment before reading Oracle documentation and notes to understand the concepts that I will write here. Oracle Data Guard Broker is a utility that can help you manage your Oracle Data Guard. Among many benefits of using this utility, I highlight that while using it, it will not need manual intervention to recover the databases or eventually a…
Oracle Data Guard 19c: rfs (PID:11969): Possible network disconnect with primary database
One of the essential things in the configuration of Oracle Data Guard and Oracle Data Guard Broker is where the file tnsnames.ora is placed, which by default, from some other early releases of 19c it has been defined at $ORACLE_HOME/network/admin. However, in one of the environments that I was providing some job as a consultant, I could see the following outputs from the Oracle Data Guard broker utility : Just a brief explanation on the output above to make it easier to understand from now on: Standby database has db_unique_name…
Active Data Guard feature: since 11g keeping your Oracle Data Guard open in read-only mode, and still applying redo information
The active Data Guard feature is not something new. It has been on since Oracle Database version 11g, but it is the first time I am writing about it on my blog (I think so!), and I think it is always nice not to miss anything on our career path. So here we go! Before Oracle Database version 11g, it was already possible to open Oracle Data Guard in open mode. Still, there were some complications, e.g., when it was needed to recover the standby database. Thinking on that, Oracle…