Background: I'm installing Oracle Database 12c R2 (12.2.0.1) software on Windows, as part of installing and configuring an Oracle Failsafe 4.2.1 environment. What is the problem? While installing Oracle Database 12.2.0.1 software on Windows, and at step number 5 "Oracle Home User", I specified a domain user in the form:company.local\abc-oinstallerBut, when I clicked "Next", I … Continue reading [INS-32101] While installing Oracle Database on Windows in a Fail Safe Environment
ORA-01623 & ORA-00312 while dropping one red log file
I got the following errors while dropping one redo log group: Please note that our database is an RAC One Node database that I'm trying to convert to Single-Instance database based on the client requirements.So, thread 2 (instance 2), is not there actually.If we query about the redo log files of instance 2: So, what … Continue reading ORA-01623 & ORA-00312 while dropping one red log file
Demo for Oracle Database Locking Policy
Virtual Machine with Oracle Database 12c R2 12.2 and Oracle Restart
https://youtu.be/qsepeUPQ-JU For more information on how to get this VM and other similar machines, please refer to:https://ahmedfattah.com/2020/06/13/oracle-virtual-machines-for-sale/ ThanksAhmed
Oracle Virtual Machines for Sale !
Are you looking for a virtual machine to do some hands-on labs or practice something (i.e. for Educational purposes}? Do you have the time to build these virtual machines yourself? Below are some really nice Virtual Machines, that I invested allot of time to build on Oracle Virtual Box, and that I used them personally … Continue reading Oracle Virtual Machines for Sale !
Oracle Single-Instance Database Creation in a Clustered Environment
ORA-38760 While starting an Oracle Database
This is a quick post about an issue that I faced while trying to start one database yesterday. When I was trying to open one 12cR1 database, I got the following error: SYS SQL>alter database open;alter database open*ERROR at line 1:ORA-38760: This database instance failed to turn on flashback database The database status was "mounted": … Continue reading ORA-38760 While starting an Oracle Database
The Longest SQL Statement I have ever seen !
Below may be the longest SQL statement that I have ever seen. I don't know if it is written by one developer or group of developers and what is the logic behind it? I really don't like this style of writing sql statements. It is very difficult to be functionally understood. Also, it is very … Continue reading The Longest SQL Statement I have ever seen !
Oracle Read Only Tables
Starting from Oracle 11gR1, oracle allows us to change a table to be a read-only table. Let us have a quick demo: I'm connecting as user HR ( to a 19c pluggable database). I have a small table "DEPT": So, now I'm going to change the table to be read only table: Now let us … Continue reading Oracle Read Only Tables
After Oracle Database Upgrade to 12.2, Database Express Did not work
I upgraded one database from 11.2.0.4 to 12.2.0.1 on one Solaris Sparc server. After that I configured the Enterprise Manager Database Express, but when I tried to access it, I got the following error: For more information about Oracle Enterprise Manager Database Express, please refer to my post:https://ahmedfattah.com/2018/10/14/oracle-enterprise-manager-database-express-12c-overview/ Environment: Oracle Solaris 11Oracle Restart 12.2.0.1Oracle Database … Continue reading After Oracle Database Upgrade to 12.2, Database Express Did not work
Ahmed AbdelFattah Blog ! 