Oracle Parameter file

Question

Hi,
my Oracle DB is 10.2.0.5 version
O.s. Linux Red Hat
I need to modify some parameter into parameter file:
Some parameters are below:
audit_sys_operations
audit_trail
compatible
db_cache_size
event
java_pool_size
job_queue_processes
large_pool_size
pga_aggregate_target
processes
session_cached_cursors
sessions
sga_max_size
sga_target
into path $ORACLE_HOME/dbs I've these files:
init.ora
initdw.ora
spfileorcl.ora
pfileORCL.ora
orapworcl
spfileORCL.ora
Which step I have to perform to change these parameters?
Thanks in advance!

Answer 1

first of all check whether you are using pfile or spfile.
SHOW PARAMETER SPFILE;
If you get the output in the VALUE column then you can directly issue the below command to change the parameters:
ALTER SYSTEM SET <PARAMETER_NAME>=<VALUE>;
You need to use the SCOPE clause depending on the nature of the parameters.
If you dont get the output in the VALUE column, then its better to create the spfile by using the command:
CREATE SPFILE FROM PFILE;
Then you can use the above method.
And if you want to use the pfile only, then you have to change the parameters manually in that file.
Some parameter changes need the bouncing of the database, while some dont need.