11gR2 has a new feature, deferred segment creation. It has through lack of wisdom, been set as default in 126.96.36.199. What it does is defer the creation of a segment until there is actually data to go into it. So if you create a table, you will not see it in dba/user_segments until you add the first row, then the segment gets created.
It is buggy - just check My Oracle Support for nasty bugs that require a database restore to fix.
Here is what I ran into today:
'alter table XXXXX enable constraint PK_XXXXX exceptions into PK_VIOLATIONS':
ORA-00600: internal error code, arguments: [kkpo_rcinfo_defstg:objnotfound], , , , , , , ,
There were various references to running the wrong catupgrd.sql script causing it, but that was not my issue. After a bit of hunting matched it to Bug 12840114 which is still open.
I highly recommend disabling this new default behaviour - that is turn off deferred segment creation.
You can do this either:
- at the database level via your init/spfile setting parameter DEFERRED_SEGMENT_CREATION to FALSE
- at the session level via "alter session set deferred_segment_creation = false;"
- at the statement level via "create table t ( x int ) segment creation immediate;"
Deferred Segment Creation...
The Tom Kyte Blog: Deferred Segment Creation...
Oracle related stuff: ORA-14404 / 14405 and Deferred Segment Creation
Alter Table Enable Constraint Fails With ORA-600 [Kkpo_rcinfo_defstg:Objnotfound] [ID 1352678.1]
The bug that got me:
Bug 12840114: ORA-600 [KKPO_RCINFO_DEFSTG:OBJNOTFOUND] ENABLING CONSTRAINT EXCEPTIONS INTO..