These functions are used to perform database operations such as: open and close, connect and disconnect, extend working memory, manage backup and recovery.
General
mco_db_open Open a database (for backward compatibility) mco_db_open_dev Open a database with specified memory devices mco_db_open_disk Open a database on persistent storage (for backward compatibility) mco_db_close Close a database mco_close_all_instances Close all database instances mco_db_kill Remove a shared memory segment associated with a database mco_db_connect Connect to a database mco_db_connect_ctx Connect to a database specifying a context mco_db_connection_context Returns the database context data associated with an existing database connection mco_db_disconnect Disconnect from a database mco_db_register_udf Register a user-defined function mco_db_params_init Initialize database parameters mco_db_extend Extend database memory mco_db_extend_ctx Extend database memory using user context mco_db_extend_t Extend database memory within a transaction mco_db_extend_dev Extend database memory by adding a memory device mco_db_extend_dev_ctx Extend database memory by adding a memory device using user context mco_db_extend_dev_t Extend database memory within a transaction by adding a memory device Snapshot mco_db_save Save a database image to an external file mco_class_save Save an entire class to an external file mco_inmem_save Save transient (in-memory) classes to an external file mco_disk_save Save persistent classes to an external file mco_db_json_export Export the entire database contents in JSON format mco_db_save_metadata Save the database internal data layout definition to an external file mco_db_save_dictionary Save the database dictionary to an external file mco_db_load Load a database image from an external file mco_class_load Load an entire class from an external file mco_inmem_load Load transient (in-memory) classes from an external file mco_disk_load Load persistent classes from an external file mco_disk_load_file Load database files from persistent storage Recovery mco_db_sniffer Inspect the state of all connections and perform recovery if dead connections are detected mco_db_recover_required() Determine from the log file if any databases connections were not properly closed mco_db_recover() Allows an application to explicitly recover a database mco_db_recover_all() Allows an application to explicitly recover any database connections that were not properly closed Auxiliary
mco_db_databases List all registered database names mco_db_clean Remove all objects from a database mco_current_registry_size Return the number of bytes required to load the database registry mco_get_last_autoid Return the last generated autoid value mco_get_class_code Return the class code of the object referenced by an object handle mco_copy_handle Copy an object handle mco_is_object_deleted Determine if an object has been deleted within the current transaction mco_aio_start() Adjust Asynchronous IO parameters for persistent databases mco_aio_stopt) Stop Asynchronous IO