Dynamic View to check National Language Support (NLS) parameters

V$NLS_VALID_VALUES

NLS_INSTANCE_PARAMETERS

NLS_DATABASE_PARAMETERS

NLS_SESSION_PARAMETERS

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NOTES:
SBT - System Backup Tape
CTWR - Change Tracking Writer
RVWR - Recover Log Writer
RMAN - Recovery Manager
ASM - Automatic Storage Management
ADDM - Automatic Database Diagnostic Management
MML - Memony Monitoring Light process
MON - Memony Managaibility Monitoring process