Category Archives: Multitenant

Oracle Multitenant – SYS*-privileges on PDB level

In an Oracle Container Database, SYSDBA, SYSDG, SYSBACKUP etc. privileges can be granted on PDB level. This enables PDB administrators with their local users e.g. to open and to close a PDB. How does this work and where is this … Continue reading

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#c18lv: Presentation “Taming the PDB”

Today I had a second presentation at COLLABORATE18 on another feature of the Multitenant Databases: Resource management and lockdown profiles. Thanks to everyone who attended the session. Here you can find: the presentation: 2018_1226_flechtner_taming_the_pdb a demo on lockdown profiles: lockdowndemo a demo … Continue reading

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DOAG 2017: Application Containers

Today was the first day of the annual DOAG conference. I had a presentation „Application Containers – Multitenancy for Applications with Oracle Database 12c Release 2“. You can find the presentation and the demos here:

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Switching a Multitenant Database to Extended Data Types

With Oracle 12c, Oracle introduced “extended data types”, which raise the limit for CHAR and VARCHAR2 datatypes from 4000 bytes to 32767 bytes. However, this is not the default setting and it takes some steps to change this setting. Especially … Continue reading

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Default administrative users when creating a PDB with DBCA

When creating a CDB and at least 1 PDB, DBCA creates the well known users SYS and SYSTEM and the user PDBADMIN. Where is this user created and which privileges are granted to PDBADMIN?

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