Oracle Database Discussions

Hello,
I have just set one of my branches databases in an test environment and changed it from a NoArchivelog Mode to an Archive Log mode.
For doing the same I have followed the stated steps:
1) Changes the entries in my ini file :

log_archive_start = true
log_archive_dest = ORAWORK:\OraHome1\oradata\btxis\archive
log_archive_format = "ARC%S.%T"

2) execute the syntax
Shutdown immediate;
Startup mount;
Alter database archivelog;
alter database open;

On Saturday I made some entries using my application and noticed that the archive files did not get generated .Then I did a shutdown and started the database again and agin passes few more entries.After which I saw 1 file generated.
Today I came in and continued making fresh entries but again I do not see any new archive files getting generated .The only file present is the one generated on Saturday.I tried shutting and starting the database and passing the entries again but the result is the same.
Please can you tell me as to where I am going wrong.

Thanx in advance
Sapna