Problem during Instance startup

Question

Hi,
Using 10gR2.
I have done some ip adress changes and then confingure database with database config assis. It was not successfull.
Now Today my database instance is not geting started.
It shows following error :
SQL> startup nomount
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file 'C:\oracle\admin\pl4100\pfile\initpl4100.ora'
Kindly help.. as we are delaying working hours..
-Rush

Answer 1

# Copyright (c) 1991, 2001, 2002 by Oracle Corporation
# Cache and I/O
db_block_size=8192
db_cache_size=264241152
db_writer_processes=1
dbwr_io_slaves=10
# Cursors and Library Cache
open_cursors=1000
# Database Identification
db_name=pl4100
# Diagnostics and Statistics
background_dump_dest=C:\ORACLE\ADMIN\PL4100\BDUMP
core_dump_dest=C:\ORACLE\ADMIN\PL4100\CDUMP
user_dump_dest=C:\ORACLE\ADMIN\PL4100\UDUMP
# Distributed, Replication and Snapshot
global_names=TRUE
# File Configuration
control_files=C:\ORACLE\ORADATA\PL4100\CONTROL01.CTL, C:\ORACLE\ORADATA\PL4100\CONTROL02.CTL
# Instance Identification
instance_name=pl4100
# Job Queues
job_queue_processes=6
# Miscellaneous
compatible=10.2.0.1.0
IFILE=C:\oracle\admin\pl4100\pfile\initpl4100.ora
# Network Registration
local_listener=LISTENER_PL4100
service_names=pl4100
# Optimizer
optimizer_index_caching=50
optimizer_index_cost_adj=20
optimizer_mode=FIRST_ROWS_100
query_rewrite_enabled=TRUE
query_rewrite_integrity=trusted
# Pools
java_pool_size=104857600
large_pool_size=33554432
shared_pool_size=209715200
# Processes and Sessions
processes=500
# Redo Log and Recovery
fast_start_mttr_target=1800
log_buffer=35933696
# Security and Auditing
remote_login_passwordfile=EXCLUSIVE
# Sort, Hash Joins, Bitmap Indexes
pga_aggregate_target=262144000
sort_area_retained_size=0
sort_area_size=0
# System Managed Undo and Rollback Segments
undo_management=AUTO
undo_retention=120
undo_tablespace=UNDO