Oracle SQL Developer is a graphical version of SQL*Plus that gives database developers a convenient way to perform basic tasks. You can browse, create, edit, and delete (drop) database objects; run SQL statements and scripts; edit and debug PL/SQL code; manipulate and export (unload) data; and view and create reports.
You can connect to any target Oracle database schema using standard Oracle database authentication. Once connected, you can perform operations on objects in the database.
You can connect to schemas for selected third-party (non-Oracle) databases, such as MySQL, Microsoft SQL Server, Sybase Adaptive Server, Microsoft Access, and IBM DB2, as well as view metadata and data in these databases; also you can migrate third-party databases to Oracle
task#5 Use SQL Developer and do the following: without any SQL or PL/SQL code writing, alter the state of the pluggable database PDBORCL from open to close, then change its state again from close to open.
step#1 – Start SQL Developer, open the View menu DBA, and click on the Option Container Database. That option will allow the management of the Container Database CDB and the Pluggable Databases PDBs. Then, open the window with the status of the pluggable database PDBORCL.
step#2 – Open the list of actions on PDBORCL
step#3 – Close the pluggable database PDBORCL
step#4 – Open the pluggable database PDBORCL in Read Write mode
SQL Developer offers to DBAs and Oracle Developers efficient control over root CDB and pluggable PDBs. Productivity of DBAs and Oracle Developers is increased more than ever with Oracle Database 12c Tools.
[ref7] Oracle® SQL Developer User’s Guide Release 3.2 E35117-06