Pluggable and externally identified users without using remote authentication

Yesterday I was shocked to find a note on metalink that recommends a huge security hole using a deprecated Parameter 2042219.1 : create user c##oracle identified externally + set remote_os_authent=true This is extremly sad. It is such a non-sense to recommend such a flaw. It makes me really angry 👿 Okay, for my readers I… Continue reading Pluggable and externally identified users without using remote authentication

Audit pluggable database

In the old now-deprecated maybe-soon-desupported non-cdb infrastructure, AUDIT’ing was done right after connect / as sysdba. In single-tenant (or multi-tenant), things get complicated. Once again, the doc must be read at least twice 😉 If you issue an audit statement in the root, then the database performs auditing across the entire CDB, that is, in… Continue reading Audit pluggable database

How to migrate non-cdb to pdb

In case you are desesperately looking for an upgrade from non-cdb to pdb with two clicks, here is the answer from Mike : you can’t Nope – not via "upgrade". You can use Data Pump, Transportable Tablespaces or Full Transportable Export/Import as a direct option but you can't upgrade and plugin in one pass unfortunately… Continue reading How to migrate non-cdb to pdb

Single Tenant duplicates

I recently reported an issue regarding single tenant. In old-time non-cdb, the SID used to be unique on a server. If you connect to srv01:port:sid, then you know where you connect. Unfortunately, this is no longer true. If for instance you have two database sid’s S01 and S02 with a pluggable P01, and both run… Continue reading Single Tenant duplicates

Categorized as 12c Tagged

sid and pluggable

I wrote about SID there. (CONNECT_DATA=(SID=DB01)) is undocumented since Oracle 11gR1 and breaks things with multi-tenant / single-tenant. You create a container CDB01 and a pluggable DB01, you can connect with sqlplus “scott/tiger@ (description=(address= (host=srv01)(port=1521)(protocol=tcp)) (connect_data=(” But one of your application has hardcoded SID=DB01 sqlplus “scott/tiger@ (description=(address= (host=srv01)(port=1521)(protocol=tcp)) (connect_data=(sid=DB01)))” ORA-12514: TNS:listener does not currently know… Continue reading sid and pluggable

Single-Tenant over bequeath connections

If you follow Oracle recommendation to use SingleTenant CDB instead of Non-CDB, then a lot of things will break. I won’t go into details, but basically, in this new architecture, you have one core container, called CDB$ROOT, which is the default container where you connect to if you connect locally sqlplus / as sysdba SQL>… Continue reading Single-Tenant over bequeath connections