What is the default NLS-DATE for 9 and 10

Question

and where is it in the documentation???

Answer 1

> Yes, it's DD-MON-RR,
Unless you are in Estonia (DD.MM.YYYY), Germany (DD-MM-RR) or Japan (RR-MM-DD), according to the examples in the Globalization Guide orafad linked to.
The default NLS_DATE_FORMAT depends on NLS_TERRITORY, which depends on the value of environment variable NLS_LANG, if set:
C:\>sqlplus william/####
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Nov 13 18:39:43 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
SQL> SELECT SYSDATE FROM dual;
SYSDATE
13-NOV-06
SQL> select * from v$nls_parameters;
PARAMETER                      VALUE
NLS_LANGUAGE                   ENGLISH
NLS_TERRITORY                  UNITED KINGDOM
NLS_CURRENCY                   ú
NLS_ISO_CURRENCY               UNITED KINGDOM
NLS_NUMERIC_CHARACTERS         .,
NLS_CALENDAR                   GREGORIAN
NLS_DATE_FORMAT                DD-MON-RR
NLS_DATE_LANGUAGE              ENGLISH
NLS_CHARACTERSET               WE8MSWIN1252
NLS_SORT                       BINARY
NLS_TIME_FORMAT                HH24.MI.SSXFF
NLS_TIMESTAMP_FORMAT           DD-MON-RR HH24.MI.SSXFF
NLS_TIME_TZ_FORMAT             HH24.MI.SSXFF TZR
NLS_TIMESTAMP_TZ_FORMAT        DD-MON-RR HH24.MI.SSXFF TZR
NLS_DUAL_CURRENCY              Ç
NLS_NCHAR_CHARACTERSET         AL16UTF16
NLS_COMP                       BINARY
NLS_LENGTH_SEMANTICS           BYTE
NLS_NCHAR_CONV_EXCP            FALSE
19 rows selected.
SQL> exit
Disconnected from Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
C:\>set NLS_LANG
Environment variable NLS_LANG not defined
C:\>set NLS_LANG=ESTONIAN
C:\>sqlplus william/####
SQL*Plus: Release 10.2.0.1.0 - Production on E Nov 13 18:31:05 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
SQL> SELECT SYSDATE FROM dual;
SYSDATE
13.11.2006
SQL> select * from v$nls_parameters;
PARAMETER                      VALUE
NLS_LANGUAGE                   ESTONIAN
NLS_TERRITORY                  ESTONIA
NLS_CURRENCY                   kr
NLS_ISO_CURRENCY               ESTONIA
NLS_NUMERIC_CHARACTERS         ,
NLS_CALENDAR                   GREGORIAN
NLS_DATE_FORMAT                DD.MM.RRRR
NLS_DATE_LANGUAGE              ESTONIAN
NLS_CHARACTERSET               WE8MSWIN1252
NLS_SORT                       ESTONIAN
NLS_TIME_FORMAT                HH24:MI:SSXFF
NLS_TIMESTAMP_FORMAT           DD.MM.RRRR HH24:MI:SSXFF
NLS_TIME_TZ_FORMAT             HH24:MI:SSXFF TZR
NLS_TIMESTAMP_TZ_FORMAT        DD.MM.RRRR HH24:MI:SSXFF TZR
NLS_DUAL_CURRENCY              kr
NLS_NCHAR_CHARACTERSET         AL16UTF16
NLS_COMP                       BINARY
NLS_LENGTH_SEMANTICS           BYTE
NLS_NCHAR_CONV_EXCP            FALSE
19 rows selected.