Oracle 10g adump, bdump, dpdump, udump

You can find the following content in the init. ora file in the admin/{Sid}/pfile file:

Audit_file_dest =
C:/Oracle/product/10.2.0/admin/orcl/adump
Background_dump_dest
= C:/Oracle/product/10.2.0/admin/orcl/bdump
User_dump_dest
=
C:/Oracle/product/10.2.0/admin/orcl/udump

Core_dump_dest =
C:/Oracle/product/10.2.0/admin/orcl/cdump

You can see from the above:

adump: Audit Information
bdump: background process trace and Alert Log, that is,
alert_sid.log also exists in this directory

cdump: Core trace, generally, it is used to log the Program
unless a problem occurs in the database, there is basically no information
dpdump:
pfile: initialization parameter file initsid
udump