While trying to open one pluggable database, I got the following errors: Background: While installing Apex 20.1 in one PDB, and while being very close to the installation completion, the session fully stucked.I restarted the database (the CDB), then I tried to open the PDB, but I got the above errors. While searching for this … Continue reading Alter Pluggable Database Open – (ORA-00604/ORA-01405) After Apex Installation
I got this question from one of my clients. He is going to migrate one database from one platform to another. In this database many users are sharing the same tablespace. For example: In the current database, all application users are sharing the tablespaces “USERS” The client wants to change this, so as each schema … Continue reading Is it possible to map one Tablespace to many Tablespaces with impdp?
As, I already have access to one Oracle Cloud Free Compute Instance (Oracle Linux), then I decided to install Oracle database 19c there and create a test database. This time, I'll use a different technique by installing Oracle Database rpm.Oracle delivered the oracle database software as rpm for Linux since Oracle 18c. Installation procedure is … Continue reading Oracle Database 19c (19.3) Installation on the Oracle Cloud Compute Instance.
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
This is a quick post about installing Oracle Database 19c (19.3) on my laptop (Windows 10). Procedure will be presented as screen cast. As far as I remember, Oracle 19c was released during Mar-2019 for Linux, and during Apr-2019 for SPARC Solaris and during Jun-2019 for Windows,zLinux , HP and AIX Software Download: First of … Continue reading Oracle Database 19c (19.3) Installation on Windows (Step-by-Step)
Oracle Database 12c introduced Oracle Enterprise Manager Database Express 12c. Oracle Enterprise Manager Express is a Web-based interface for managing an Oracle database. Using Oracle EM Database Express, you can perform basic administrative tasks such as user, performance, memory, and space management. Oracle Enterprise Manager Database Control is no longer available. EM Database Express is … Continue reading Oracle Enterprise Manager Database Express 12c Overview
Following are screen shots from one of my latest presentations about this topic: References: https://docs.oracle.com/database/121/HTMIG/db_pluggable.htm https://oracle-base.com/articles/12c/multitenant-uninstall-apex-from-the-cdb-12cr1 ThanksAhmed
This post is just a screen cast for the process of creating a new container database with two PDBs in Oracle version 12.2. Login to the database server, set the ORACLE_HOME , PATH and DISPLAY , then run the Database Configuration Assistant "dbca" as oracle user: Check the listener status and ensure that the newly … Continue reading Oracle 12.2 Database Creation