1. Move to Oracle Cloud Using Zero Downtime Migration
  2. Zero Downtime Migration Port Requirements

A Zero Downtime Migration Port Requirements

The ports required for communication between the Zero Downtime Migration service host, the source and target database servers, and Oracle Cloud Object Store Service are described in the following table.

Table A-1 Zero Downtime Migration Communication Ports

Initiator Target Protocol Port Purpose Description
Zero Downtime Migration service host Source and target database servers TCP 22 SSH Authentication-based operations to run Zero Downtime Migration operational phases

Source and target database servers should accept incoming connections from the Zero Downtime Migration service host.
Source database servers Target database servers TCP 1521 SQL*Net Should allow Oracle client connections to the database over Oracle's SQL*Net protocol

Perform database queries, Data Guard sync, and configuration

Note: If you are using a non-default port number (that is, something other than port 1521) for the local listener address, then the non-default port should allow connections.

Target database servers Source database servers TCP 1521 SQL*Net Should allow Oracle client connections to the database over Oracle's SQL*Net protocol

Allows redo log shipping if source database needs to be in sync with the new primary on Oracle Cloud after switchover. If there is no communication possible from Oracle Cloud to source database server then set SKIP_FALLBACK to TRUE in the response file to avoid this communication.

Note: If you are using a non-default port number (that is, something other than port 1521) for the local listener address, then the non-default port should allow connections.

Source database servers Oracle Cloud Object Store Service SSL 443 Database backup store. Create a backup of the source database to the specified Oracle Cloud Object store container. If the chosen backup method uses Oracle Cloud Object Store Service as the backup medium, then access ports as documented Oracle Cloud Object Store Service applies.
Target database servers Oracle Cloud Object Store Service SSL 443 Database backup store. Restore backup of the source database from the specified Oracle Cloud Object store container to the target database. If the chosen backup method uses Oracle Cloud Object Store Service as the backup medium, then access ports as documented Oracle Cloud Object Store Service applies.