all_stores_total_mapped_memory_size

The size to allocate for a memory mapping pool to be shared between all stores.

allow_store_upgrade

Whether to allow a store upgrade in case the current version of the database starts against an older store version. Setting this to true does not guarantee successful upgrade, just that it allows an attempt at it.

array_block_size

Specifies the block size for storing arrays. This parameter is only honored when the store is created, otherwise it is ignored. The default block size is 120 bytes, and the overhead of each block is the same as for string blocks, i.e., 8 bytes.

backup_slave

Mark this database as a backup slave.

cache_type

The type of cache to use for nodes and relationships. Note that the Neo4j Enterprise Edition has the additional 'gcr' cache type. See the chapter on caches in the manual for more information.

cypher_parser_version

Enable this to specify a parser other than the default one.

dump_configuration

Print out the effective Neo4j configuration after startup.

forced_kernel_id

An identifier that uniquely identifies this graph database instance within this JVM. Defaults to an auto-generated number depending on how many instance are started in this JVM.

gc_monitor_threshold

The amount of time in ms the monitor thread has to be blocked before logging a message it was blocked.

gc_monitor_wait_time

Amount of time in ms the GC monitor thread will wait before taking another measurement.

gcr_cache_min_log_interval

The minimal time that must pass in between logging statistics from the cache (when using the 'gcr' cache).

grab_file_lock

Whether to grab locks on files or not.

intercept_committing_transactions

Determines whether any TransactionInterceptors loaded will intercept prepared transactions before they reach the logical log.

intercept_deserialized_transactions

Determines whether any TransactionInterceptors loaded will intercept externally received transactions (e.g. in HA) before they reach the logical log and are applied to the store.

keep_logical_logs

Make Neo4j keep the logical transaction logs for being able to backup the database.Can be used for specifying the threshold to prune logical logs after. For example "10 days" will prune logical logs that only contains transactions older than 10 days from the current time, or "100k txs" will keep the 100k latest transactions and prune any older transactions.

load_kernel_extensions

Enable loading kernel extensions

log_mapped_memory_stats

Tell Neo4j to regularly log memory mapping statistics.

log_mapped_memory_stats_filename

The file where Neo4j will record memory mapping statistics.

log_mapped_memory_stats_interval

The number of records to be loaded between regular logging of memory mapping statistics.

logging.threshold_for_rotation

Threshold in bytes for when database logs (text logs, for debugging, that is) are rotated.

logical_log

The base name for the logical log files, either an absolute path or relative to the store_dir setting. This should generally not be changed.

logical_log_rotation_threshold

Specifies at which file size the logical log will auto-rotate. 0 means that no rotation will automatically occur based on file size. Default is 25M

lucene_searcher_cache_size

Integer value that sets the maximum number of open lucene index searchers.

lucene_writer_cache_size

NOTE: This no longer has any effect. Integer value that sets the maximum number of open lucene index writers.

mapped_memory_page_size

Target size for pages of mapped memory.

neo_store

The base name for the Neo4j Store files, either an absolute path or relative to the store_dir setting. This should generally not be changed.

neostore.nodestore.db.mapped_memory

The size to allocate for memory mapping the node store.

neostore.propertystore.db.arrays.mapped_memory

The size to allocate for memory mapping the array property store.

neostore.propertystore.db.index.keys.mapped_memory

The size to allocate for memory mapping the store for property key strings.

neostore.propertystore.db.index.mapped_memory

The size to allocate for memory mapping the store for property key indexes.

neostore.propertystore.db.mapped_memory

The size to allocate for memory mapping the property value store.

neostore.propertystore.db.strings.mapped_memory

The size to allocate for memory mapping the string property store.

neostore.relationshipstore.db.mapped_memory

The size to allocate for memory mapping the relationship store.

node_auto_indexing

Controls the auto indexing feature for nodes. Setting to false shuts it down, while true enables it by default for properties listed in the node_keys_indexable setting.

node_cache_array_fraction

The fraction of the heap (1%-10%) to use for the base array in the node cache (when using the 'gcr' cache).

node_cache_size

The amount of memory to use for the node cache (when using the 'gcr' cache).

node_keys_indexable

A list of property names (comma separated) that will be indexed by default. This applies to Nodes only.

query_cache_size

Used to set the number of Cypher query execution plans that are cached.

read_only

Only allow read operations from this Neo4j instance. This mode still requires write access to the directory for lock purposes

rebuild_idgenerators_fast

Use a quick approach for rebuilding the ID generators. This give quicker recovery time, but will limit the ability to reuse the space of deleted entities.

relationship_auto_indexing

Controls the auto indexing feature for relationships. Setting to false shuts it down, while true enables it by default for properties listed in the relationship_keys_indexable setting.

relationship_cache_array_fraction

The fraction of the heap (1%-10%) to use for the base array in the relationship cache (when using the 'gcr' cache).

relationship_cache_size

The amount of memory to use for the relationship cache (when using the 'gcr' cache).

relationship_grab_size

How many relationships to read at a time during iteration

relationship_keys_indexable

A list of property names (comma separated) that will be indexed by default. This applies to Relationships only.

remote_logging_enabled

Whether to enable logging to a remote server or not.

remote_logging_host

Host for remote logging using LogBack SocketAppender.

remote_logging_port

Port for remote logging using LogBack SocketAppender.

store_dir

The directory where the database files are located.

string_block_size

Specifies the block size for storing strings. This parameter is only honored when the store is created, otherwise it is ignored. Note that each character in a string occupies two bytes, meaning that a block size of 120 (the default size) will hold a 60 character long string before overflowing into a second block. Also note that each block carries an overhead of 8 bytes. This means that if the block size is 120, the size of the stored records will be 128 bytes.

tx_manager_impl

The name of the Transaction Manager service to use as defined in the TM service provider constructor.

use_memory_mapped_buffers

Tell Neo4j to use memory mapped buffers for accessing the native storage layer.