The SSSD files provider, which retrieves user information from local files such as /etc/shadow and group information from /etc/groups, is deprecated and disabled by default in Oracle Linux 9.

To retrieve user and group information from local files with SSSD:

1. Configure SSSD. Choose one of the following options:

   1. Explicitly configure a local domain with the id_provider=files option in the sssd.conf configuration file.

      [domain/local]
      id_provider=files
      ...

   2. Enable the files provider by setting enable_files_domain=true in the sssd.conf configuration file.

      [sssd]
      enable_files_domain = true

2. Configure the name services switch.

   sudo authselect enable-feature with-files-provider

The OpenLDAP project has deprecated the -h and -p options in its utilities, and recommends using the -H option instead to specify the LDAP URI.

Because of optimizations to filter reordering, the nsslapd-idlistscanlimit parameter results in having a negative impact on search performance and is therefore deprecated. Further, the parameter's default value is changed to 2147483646

Beginning with Samba 4.11, the Server Message Block version 1 (SMB1) protocol is deprecated because of its insecure features. By default, this protocol is disabled in both Samba server and client utilities.