Abstract: Embodiments of the invention relate to memory management methods and systems for object-oriented databases (OODB). In an embodiment, a database includes a plurality of memory-mapped file segments stored on at least one nonvolatile memory medium and not in main memory. An application program connects to the database with a plurality of writing processes to simultaneously write to an in-memory database, each writing process updating its own disk-based logfile, such that the effective disk writing speed is substantially increased and lock conflicts reduced.

Abstract: A computer system for generating an Instantly Built Information Space (IBIS) for use with an application program is provided. The application program connects to a data repository. The application program connects to at least one Bookkeeping Information Space (BIS). The address of a main database object of the BIS is placed into a knowledge base pointer. The address of a main database object of the database is placed into a pointer in an object of the BIS. The database and the BIS are included in the IBIS. The BIS is accessed by the application program through the knowledge base pointer and the database is accessed by the application program through the pointer in the object of the BIS.

Abstract: Embodiments of the invention relate to memory management methods and systems for object-oriented databases (OODB). In an embodiment, a database includes a plurality of memory-mapped file segments stored on at least one nonvolatile memory medium and not in main memory. An application program connects to the database with a plurality of writing processes to simultaneously write to an in-memory database, each writing process updating its own disk-based logfile, such that the effective disk writing speed is substantially increased and lock conflicts reduced.

Abstract: Embodiments of the present invention relate to memory management methods and systems for object-oriented databases (OODB). In an embodiment, a database includes a plurality of memory-mapped file segments stored on at least one nonvolatile memory medium and not in main memory. An application program connects to the database. A fault handler associated with the database is registered with the operating system of the application program. The fault handler catches a segmentation fault that is issued for an object referenced by the application program and resident in the database. A file segment corresponding to the referenced object is found and mapped into main memory. The application program is restarted. Because data is transparently mapped into and out of the main memory without copying the data, objects may be read with near zero latency, and size restrictions on the database may be eliminated.