Sundaramurthy Blog

January 21, 2010

Oracle Layer

Filed under: Oracle internals — sundar5 @ 11:11 pm

Kernel Subsystems:

OCI   Oracle Call  Interface
UPI   User Program Interface

Net interconnection

OPI   Oracle Program Interface
KK    Compilation Layer
KX    Execution Layer
K2    Distributed Execution Layer
NPI   Network Program Interface
KZ    Security Layer – Validate privs
KQ    Query Layer
RPI   Recursive Program Interface
KA    Access Layer
KD    Data Layer
KT    Transaction Layer
KC    Cache Layer
KS    Services Layer
KJ    Lock Manager Layer
KG    Generic Layer
KV    Kernel Variables
S     Operating System Dependency (ODS)

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