Automated online upgrade of database replication

A computer program product for automated upgrading of a database replications system online, the computer program product comprising:

• one or more computer readable storage devices and program instructions stored on the one or more computer readable storage devices, the stored program instructions comprising:
• program instruction to stop an upgrade using a first incremental update strategy on data of a source database;
• program instruction to identify an earliest open transaction from a first database to a second database;
• program instruction to identify a last committed log record identifier;
• program instruction to execute an adaptive apply strategy on transactions including the earliest open transaction until the last committed log record identifier is reached by the adaptive apply strategy;
• and
• program instruction to resume, by upgrade controller, the upgrade with a second incremental update strategy.

A computer system for automated upgrading of a database replications system online, the computer system comprising:

• one or more computer processors;
• one or more computer readable storage devices;
• program instructions stored on the one or more computer readable storage devices for execution by at least one of the one or more computer processors, the stored program instructions comprising:
• program instruction to stop an upgrade using a first incremental update strategy on data of a source database;
• program instruction to identify an earliest open transaction from a first database to a second database;
• program instruction to identify a last committed log record identifier;
• program instruction to execute an adaptive apply strategy on transactions including the earliest open transaction until the last committed log record identifier is reached by the adaptive apply strategy;
• and
• program instruction to resume, by upgrade controller, the upgrade with a second incremental update strategy.