User`s guide

DBA Startup Variables
B-8 Oracle Database User's Guide
B.4.10 JOBID
This variable is used internally in identifying the background tasks and generating
task-specific names. You see it in some places, but you should never specify it
yourself.
Classification: DBA
B.4.11 KNL_BASE
This variable gives the base address where the shared memory pool is mapped in
memory. This must be an integral number of megabytes.
Format: KNL_BASE = address
Classification: DBA
Default: KNL_BASE = 72M
B.4.12 ORACLE_HOME
The Oracle home directory is the directory in the POSIX file system which contains the
installation of the software for a particular Oracle product.
Format: ORACLE_HOME = /path-name
Classification: DBA , USER
B.4.13 PGA_BASE
This variable specifies the base address of the fixed part of the PGA. The PGA is
task-specific, but must be located at a fixed memory address so that the kernel can
access it. The base address must lie on a 64KB boundary.
Format: PGA_BASE = address
Classification: DBA
Default: PGA_BASE = 189M
B.4.14 PGA_SIZE
This variable specifies the size of the fixed part of the PGA. This variable should not
be changed from its default value.
Format: PGA_SIZE = size
Classification: DBA
Default: PGA_SIZE = 64K
B.4.15 SF_PBLKSIZE
This variable specifies the physical blocksize of redo log files.
Note: The value of PGA_BASE is taken from the kernel if the shared
kernel is already loaded.
Note: The value of PGA_SIZE is taken from the kernel if the shared
kernel is already loaded.