Error
Error Code: ACFS-05917

Oracle Database Error ACFS-05917: Standby Node SSH Root Login Failed

📦 Oracle Database
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Description

This error indicates that an automated or manual process originating from an Oracle primary node failed to establish an SSH connection with root privileges to a specified standby node. It typically occurs during operations that require secure remote execution, such as ACFS configuration, patching, or Oracle Data Guard management, preventing the operation from proceeding.
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Error Message

user 'root' on node string unable to continue logging in via 'ssh' to the standby node string as user ' string '
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Known Causes

4 known causes
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SSH Key Mismatch or Absence
The required SSH public key for root user authentication is missing, incorrect, or not properly authorized in the `authorized_keys` file on the standby node.
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Incorrect SSH File Permissions
The file or directory permissions for the `~/.ssh` directory or `authorized_keys` file on the standby node are too permissive, causing SSH to reject the authentication attempt for security reasons.
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Root SSH Login Disabled
The `PermitRootLogin` parameter in the `sshd_config` file on the standby node is set to `no` or `prohibit-password`, explicitly preventing direct root SSH access.
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Network or Firewall Blockage
Network connectivity issues or firewall rules are blocking SSH traffic (typically port 22) between the initiating node and the target standby node.
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Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

  • Check the error message carefully for specific details
  • Review recent changes that might have caused the error
  • Search for the exact error code in the official documentation
  • Check log files for additional context
  • Try restarting the application or service

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