You can complete the preinstallation configuration tasks manually.

Oracle recommends that you use Oracle Universal Installer and Cluster Verification Utility fixup scripts to complete minimal configuration settings. If you cannot use fixup scripts, then complete minimum system settings manually.

• Configuring Kernel Parameters for Linux
  These topics explain how to configure kernel parameters manually for Linux if you cannot complete them using the fixup scripts.
• Configuring Default Thread Limits Value for SUSE Linux
  If you are on SUSE Linux Enterprise Server 12 SP2 or later, or SUSE Linux Enterprise Server 15 or later, then set the DefaultTasksMax parameter value to 65535.
• Configuring Storage Device Path Persistence Using Oracle ASMLIB
  To use Oracle ASMLIB to configure Oracle ASM devices, complete the following tasks:
• Configuring Storage Device Path Persistence Manually
  You can maintain storage file path persistence by creating a rules file.