Hi, I still see that many dba is creating their databases using “General Purpose or Transaction Processing” template. Why you shouldn’t use it? Because it is way too general! if you click the “view details” on the right: Almost all the “Components” are true. So it installs everything even if you don’t use it. […]
Mustafa
Basically, SQL is the third language that I can speak. I work as a consultant and tuning is my favorite area.
NON-CDB to PDB Migration Horror
Hello everyone, Lately I migrated a non-cdb to pdb for a client database and it almost become a horror movie for over 2 weeks to me. before I start, if you want to know how to migrate from a non-cdb to pdb you can check one of my previous post: http://mustafakalayci.me/2022/03/25/3-ways-to-migrate-a-non-cdb-database-to-a-pdb/ Basically this is not […]
23c is Finally Here!
Hello everyone, Well, it is just developer version so don’t try to install on your environments 🙂 My twitter is full of 23c tweets about these days. I also downloaded immediately and tested what I wanted the most for 4-5 years! “Schema Level Privileges” and I am so excited about it. Preliminary Information if you […]
Not Deploying is also Important!
Hello there, I mentioned about writing a nasty ORA-600 error and here it is; One day I woke up and one my databases was started to raise some ORA-600 errors: ORA-00600: internal error code, arguments: [ktfacht1-0], [], [], [], [], [], [], [], [], [], [], [] there were also some “snapshot too old” errors […]
Damaged rowid is referenced! Health Monitor
Hi, a quick note! today while checking health monitor results, I found this: SQL dictionary health check: objauth$.grantor# fk 246 on object OBJAUTH$ failed Damaged rowid is AAAAA9AABAAATI1AAa – description: Object MY_OWNER.SOME_VIEW is referenced I replaced actual owner and view name with “MY_OWNER.SOME_VIEW”. Health check is telling me that a view is referencing to a […]
Old Obsolete Backup is not Deleted
Hi, Happy new year (after almost a month). I was quite busy and lazy to write a new blog post but today I found the energy. What I realized newly is a little bit shocking for me because I had no idea! Maybe this is just an ignorance of me but I never read anything […]
Autoupgrade doesn’t Upgrade Timezone Version While RU Patching
Hi, during some tests, I realized that autoupgrade tool (the magic tool for upgrade and patching) doesn’t upgrade timezone version of database. here is the environment: Oracle Linux 8.6 ORACLE_HOME 1 :/u01/app/oracle/product/dbhome_1/dbhome_19_3 Database orcl created in 19.3 with default time zone version (V32) ORACLE_HOME 2 :/u01/app/oracle/product/dbhome_1/dbhome_19_16 Time zone version is upgraded to V39. this is […]
Unique Columns For V$Sql
Hi, Until yesterday I was saying SQL_ID and CHILD_NUMBER is enough to get a sql child cursor from V$SQL and today I know I was wrong. Probably many times you needed the sql statement that a session is running. To do that you query V$session and find the session information and then use SQL_ID column […]
Should Run datapatch After DBCA
Yesterday, I was testing some stuff in database and I needed to create new homes/new databases (new life new beginning). at a point I realized that something is not right about database. One thing to another I found the reason and it was interesting to me. I used DBCA to create database ( also I […]
APPLY with status WITH ERRORS in the PDB
Yesterday, I was doing some tests about noncdb to pdb conversions and during one of these tests I got a strange error. By the way, I am doing those tests because of a side effect of noncdb to pdb. I have already created an SR about it and write a post here later. here is […]