Hello

I could not dind alert file in bdump folder
SQL> startup nomount pfile=C:\oracle\admin\arundb\pfile\initarundb.ora
ORACLE instance started.

Total System Global Area 118255568 bytes
Fixed Size 282576 bytes
Variable Size 83886080 bytes
Database Buffers 33554432 bytes
Redo Buffers 532480 bytes
SQL> SHOW PARAMETER DUMP

NAME TYPE VALUE
------------------------------------ ----------- -----------------------------
background_core_dump string partial
background_dump_dest string C:\oracle\admin\arundb\bdump
core_dump_dest string C:\oracle\admin\arundb\cdump
max_dump_file_size string UNLIMITED
shadow_core_dump string partial
user_dump_dest string C:\oracle\admin\arundb\udump
SQL> alter database mount;
database mounted
----------------------
now when i try to run alter database open i find error
ORA-01092: ORACLE instance terminated. Disconnection forced
i could not locate alert file to trouble shoot
Please help