What determines UMASK for Oracle Job using UTL_FILE?

A PL/SQL job **foobar622** writes files to UNIX/LINUX server using the following Oracle file I/O commands: UTL_FILE.FILE_OPEN UTL_FILE.PUT_LINE UTL_FILE.FILE_CLOSE In the past the files had these permissions: -rw-r--r-- 1 User_foobar_101 UnixGroup_101 563343 Apr 25 00:22 foobar622_fz.sql -rw-r--r-- 1 User_foobar_101 UnixGroup_101 563343 Apr 25 00:22 foobar622_fa.sql -rw-r--r-- 1 User_foobar_101 UnixGroup_101 563343 Apr 25 00:22 foobar622_fb.sql -rw-r--r-- 1 User_foobar_101 UnixGroup_101 563343 Apr 25 00:22 foobar622_fc.sql -rw-r--r-- 1 User_foobar_101 UnixGroup_101 563343 Apr 25 00:22 foobar622_fd.sql Now **foobar622** writes with these permissions: And I get a permission denied error when I try to open file in my editor. -rw-r----- 1 Unknown+User Unknown+Group 563343 May 22 00:22 foobar622_fa.sql -rw-r----- 1 Unknown+User Unknown+Group 563347 May 25 00:22 foobar622_fb.sql -rw-r----- 1 Unknown+User Unknown+Group 563333 May 25 00:22 foobar622_fc.sql -rw-r----- 1 Unknown+User Unknown+Group 563923 May 25 00:22 foobar622_fd.sql How do I go about restoring first default permissions? Is this an Oracle setting or a UMASK setting, or what?