Neo4j - Java堆空间java.lang.OutOfMemoryError: Java堆空间

Question

我想我需要Neo4j (图形数据库)的帮助

我在json文件(~250 in )中有中等大小的数据(~300 JSON对象)。我必须使用这个文件创建图形数据库。

但我有个例外：

线程中“heap 2007561282-66”异常中的

异常“新4j.TransactionTimeoutMonitor-29”线程中的异常“新4j.FileIOHelper-12”线程中的异常“新4j.IndexSampls-17”线程中的异常“新4j.FileIOHelper-20”2021-06-27 03:44:06.265+0000警告Java堆空间java.lang.OutOfMemoryError:线程“新4j.StorageMain-28”线程中的Java堆空间异常-线程“新4j.FileHelper-4”中的线程“新4j.FileHelper-4”异常中的线程“新4j.FileHelper-4”异常-27 03:44:06.280+0000警告Java堆空间java.lang.OutOfMemoryError: Java堆空间异常在线程“新4j.FileIOHelper-18”2021-06-27 03:44:06.293+0000警告Java堆空间java.lang.OutOfMemoryError: Java堆空间java.lang.OutOfMemoryError: Java堆空间2021-06-27 03:44:06.416+0000错误，在螺栓会话'bolt-16‘中检测到意外错误。无法初始化类org.apache.commons.lang3.exception.ExceptionUtils java.lang.NoClassDefFoundError:无法初始化类org.apache.commons.lang3.exception.ExceptionUtils

我的密码SQL查询是这样的：

with "file:///data.json" as url
call apoc.load.json(url)
yield value
merge (c:Company {register: value.info.register_number})
on create set c.name = value.info.company_name,
c.form = value.info.company_form,
c.register_date = value.info.register_date,
c.type = value.info.company_type,
c.number_of_owners = value.info.number_of_owner,
c.location = value.info.company_location
foreach (holder in value.stakeHolders | 
merge (p:Person {person_id : holder.firstname + "." + holder.lastname})
on create set p.firstname = holder.lastname,
p.lastname = holder.firstname,
p.country = holder.country
create (holder1:RegisterDate {date: holder.date})
merge (p)-[:has]->(holder1)-[:holder_of]->(c)
)
foreach (manager in value.ceo | 
merge (m:Person {person_id: manager.lastname + "." + manager.firstname})
on create set m.firstname = manager.firstname,
m.lastname = manager.lastname,
m.country = manager.country
create (manager1:RegisterDate {
position: manager.position,
date: manager.date
})
merge (m)-[:has]->(manager1)-[:has_position]->(c)
)
foreach (area in value.area |
merge (a:ActivityArea {code: area.code})
on create set a.title = area.title
create (area1:RegisterDate {
date: area.date
})
merge (c)-[:has]->(area1)-[:operation]->(a))

我该怎么办？请帮帮我!

Answer 1

增加配置文件夹中的neo4j配置文件中的jvm堆大小，然后重新启动。

 file: <neo4j-home>/conf/neo4j.conf

这是关于它的文档。https://neo4j.com/docs/operations-manual/current/configuration/neo4j-conf/#neo4j-conf-JVM