内部视图x$kvii
554078 kslerb event range base
873 kslnbe # of base events
285 kslnbesess # of base events in session
382 kslltl number of latches
2 ksbcpu_static initial number of CPUs in the system
4096 kcbswc DBWR max outstanding writes
1 kcbnwp number of DBWR processes
204 kcbscw DBWR write chunk
1 kctsat true if Statically Allocated Thread
1 kctthr THRead mounted by this instance - zero if none
1 ktsinm sga shadow value of instance_number
0 rfragns Global request id for site
其中kslltl为Oracle中父闩的数量，即kslltl=select count(*) from v$latch;
ksbcpu_static记录了当前cpu的内核总数。
kcbswc为Oracle单位时间内所能写出的最大块数
（Largest # blocks you can write at any given time）实际受限于物理写出能力。
kctthr为当前实例的线程号。
关于这些视图的研究仍有诸多不明确。
附Oracle kernel 层次：
Kernel Subsystems:
| OPI |
Oracle Program Interface |
| KK |
Compilation Layer - Parse SQL, compile PL/SQL |
| KX |
Execution Layer - Bind and execute SQL and PL/SQL |
| K2 |
Distributed Execution Layer - 2PC handling |
| 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 (eg. x$KVIS and X$KVII) |
| S or ODS |
Operating System Dependencies |