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Berkeley DB .NET API Documentation
HashDatabase Properties
HashDatabase Class See Also Send Feedback

The HashDatabase type exposes the following members.

# Properties

| Name | Description
--- | --- | ---
| AutoCommit | If true, all database modification operations based on this object will be transactionally protected. (Inherited from BaseDatabase.)
| CacheSize | The size of the shared memory buffer pool -- that is, the cache. (Inherited from BaseDatabase.)
| Compare | The Hash key comparison function. The comparison function is called whenever it is necessary to compare a key specified by the application with a key currently stored in the tree.
| Creation | The CreatePolicy with which this database was opened. (Inherited from BaseDatabase.)
| DatabaseName | The name of this database, if it has one. (Inherited from BaseDatabase.)
| DoChecksum | If true, do checksum verification of pages read into the cache from the backing filestore. (Inherited from BaseDatabase.)
| DupCompare | The duplicate data item comparison function.
| Duplicates | Whether the insertion of duplicate data items in the database is permitted, and whether duplicates items are sorted.
| EncryptAlgorithm | The algorithm used by the Berkeley DB library to perform encryption and decryption. (Inherited from BaseDatabase.)
| Encrypted | If true, encrypt all data stored in the database. (Inherited from BaseDatabase.)
| Endianness | The database byte order. (Inherited from BaseDatabase.)
| ErrorFeedback | The mechanism for reporting detailed error messages to the application. (Inherited from BaseDatabase.)
| ErrorPrefix | The prefix string that appears before error messages issued by Berkeley DB. (Inherited from BaseDatabase.)
| Feedback | Monitor progress within long running operations. (Inherited from BaseDatabase.)
| FileName | The filename of this database, if it has one. (Inherited from BaseDatabase.)
| FillFactor | The desired density within the hash table.
| FreeThreaded | If true, the object is free-threaded; that is, concurrently usable by multiple threads in the address space. (Inherited from BaseDatabase.)
| HashFunction | A user-defined hash function; if no hash function is specified, a default hash function is used.
| HasMultiple | If true, the object references a physical file supporting multiple databases. (Inherited from BaseDatabase.)
| InHostOrder | If true, the underlying database files were created on an architecture of the same byte order as the current one. This information may be used to determine whether application data needs to be adjusted for this architecture or not. (Inherited from BaseDatabase.)
| NoMMap | If true, this database is not mapped into process memory. See MMapSize for further information. (Inherited from BaseDatabase.)
| NonDurableTxns | If true, Berkeley DB will not write log records for this database. (Inherited from BaseDatabase.)

NoWaitDbExclusiveLock

If true, configure the database handle to obtain a write lock on the entire database. When the database is opened it will immediately throw LockNotGrantedException if it cannot obtain the exclusive lock immediately. If False, configure the database handle to obtain a write lock on the entire database. When the database is opened, it will block until it can obtain the exclusive lock. If null, do not configure the database handle to obtain a write lock on the entire database.
(Inherited from BaseDatabase.)

| Pagesize | The database's current page size. (Inherited from BaseDatabase.)
| Priority | The cache priority for pages referenced by this object. (Inherited from BaseDatabase.)
| ReadOnly | If true, this database has been opened for reading only. Any attempt to modify items in the database will fail, regardless of the actual permissions of any underlying files. (Inherited from BaseDatabase.)
| ReadUncommitted | If true, this database supports transactional read operations with degree 1 isolation. Read operations on the database may request the return of modified but not yet committed data. (Inherited from BaseDatabase.)
| TableSize | An estimate of the final size of the hash table.
| Transactional | If true, this database has been opened in a transactional mode. (Inherited from BaseDatabase.)
| Truncated | If true, the underlying file was physically truncated upon open, discarding all previous databases it might have held. (Inherited from BaseDatabase.)
| Type | The type of the underlying access method (and file format). This value may be used to determine the type of the database after an Open(String, DatabaseConfig). (Inherited from BaseDatabase.)
| UseMVCC | If true, the database was opened with support for multiversion concurrency control. (Inherited from BaseDatabase.)

# See Also

HashDatabase Class
BerkeleyDB Namespace