As you know, the architecture of the Oracle database in the 12c version has undergone many improvements, now we can talk about “Pluggable Database”, “Container” and “SEED”. For those who are already deep in these new concepts of “multitanent” they will already be aware that a database of type “CDB” may contain from zero to 253 “Pluggable Databases” including the “SEED”. A database that hosts all internal databases is called “CBD $ ROOT” and internal databases are called “Pluggable Database” or “PDB”, the “PDB $ SEED” is also a PDB, but the difference is that it can only be opened in read mode and is used as a template to create new PDB.
All you need to know about LOCAL COMMON and Oracle Database 12c
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Ravikumar has nearly two decades of experience in the industry and has spent most of his career in architecting, designing, implementing and maintaining enterprise and world class database solutions. He is a well known Oracle technology expert and is an Oracle Certified Master (OCM) & Oracle ACE. His in-depth knowledge and hands on experience in Databases, Operating systems and enterprise applications has helped leading organizations successfully implement and run efficient and well-designed data centric technology. He continuously trains, mentors and motivates budding DBA’s. He is an expert trainer and a consultant on latest database technologies. He is a co-founder of OraWorld and is a regular speaker at OTN Yathra and an active member of AIOUG. For More Details: Oracle ACE Oracle Certified Master (OCM) Co-Founder Of Oraworld-team