Creating the pluggable database and objects.Downloading and installing Oracle 18c Express edition.In this article, I am going to cover the following topics: We can create only three pluggable databases.If you try to install more than one XE database, you will encounter an ORA-00442 instance violation error. A logical environment can be a container, a virtual machine or a physical host. The Oracle XE database can be installed in one logical environment only.If the user data grows beyond 12GB, you will encounter an ORA-12592 Oracle XE can use 12GB of storage to save the user data.
The Oracle XE database can use a maximum of 2GB of RAM for query processing.When a client tries to execute a large workload, they might face a CPU bottleneck. When you run a query on an eight-core CPU, the Oracle XE database will limit the query execution within two cores. Oracle XE can use two cores for data processing.Because this is a smaller-footprint edition of Oracle databases, note that the Oracle 18c Express edition has the following limitations: For those looking to use it with Quest®Toad® for Oracle, this database version is supported. Oracle 18c Express edition (XE) is a lightweight database that can be used to host small applications and is often used by students or developers to test their applications. Introduction to Oracle 18c Express edition (XE)
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