About temporary

manual

General Settings and Logging

Describes general configuration and logging of the ObjectDB Java object database for JPA and JDO. the ObjectDB General configuration section.... To meet memory constraints ObjectDB can use temporary files in processing of large data, such as query results that contain ... of objects. The <temp> element specifies temporary file settings: The path attribute specifies a ...

 
forum_thread

Exception when dataset bigger than treshold

I was working on reporting service for my application and found a problem with datasets bigger than treshold set in objectdb.conf.   ... ObjectDB has failed in creating a temporary file at  /tmp/ObjectDB/789641482/BatchQueryItr_0.fls. ... The only problem is with ODB when there is a need for temporary files. edit ...

 
issue

Use temporary files to enable very large transactions

We have transactions in which many objects are created. These objects are no longer needed in the current transaction after creation. Unfortunately, we will receive an OutOfMemory exception because the objects are kept in the first level cache of ObjectDB. In the forum thread http://www.objectdb.com/database/forum/921 on post #4 you wrote, that ObjectDB should support very large transactions in further version. Can you implement it that ObjectDB used temporary files? ... Can you implement it that ObjectDB used temporary files? edit ... an evaluation version, in which this data is written to a temporary file. Even without speed optimizations, but with priority on the ...

 
forum_thread

Attempt to open a non existing file '/tmp/objectdb_xxxx/SortQueryItr_6.mrg'

Hi, I came across an error - but i have not been able to create a simple reproducible case - the error does not happen often and does not happen always -  Let me explain: 1/ I run 5 java applications at the same time on one machine - each application is using an ODB file (each one is using a different one). Basically each application does a sorted query ( qqq = em.createQuery("SELECT bk FROM OBN bk ORDER BY bk.time ASC", OBN); ) 2/ after a little while - some of the applications throws this error message: ... ObjectDB deletes its temporary files in 2 ways: Every process deletes its own temporary files that become unreachable (tracked by using weak references). ...

 
forum_thread

Empty temporary dat files in the temp folder

Hello, We have questions regarding the pagesX.dat files in the temp directory. We detected a problem on a machine with ‘only’ 2GB free memory on disc drive C:/ because during using our Product the %temp%/objectdb_123... folder growth up to 2GB. And then we run into some following errors due to lack of memory. ... 16:29 A new temporary file of this type is created every time an ObjectDB database file is ... is enabled. In the new build (2.6.8_08) the temporary file is deleted when the database file (represented by an ... report today. Still, ObjectDB deletes all unused temporary files periodically (also in 2.6.8_06). This happens when a new ...

 
forum_thread

Temporary disabling of indexes?

When populating a large database with objects that have indexed fields takes very much longer than populating the database with those objects if the index definitions are removed.  Is it possible to indicate in some way that for a particular use of the database indexes are to be ignored, and can be rebuilt later? #1 2016-06-29 18:30 When populating a large database with objects that have indexed fields takes very much longer than populating the ...

 
forum_thread

Doctor - high memory usage

Hi, Is it possible to reduce Doctor memory usage? Right now for recovering 67MB database, I need to set heap space to at least 450MB. Even then whole process takes ages. Optimal setting for this database is about 650MB. It's about ten times of size of database. ... You may try decreasing the temporary file threshold . The Doctor will use less memory and more temporary files, but it might become even slower.   ...

 
release

2.7.1

... ( issue #295 ). Fixed the location of a temporary file for index update ( issue #296 ). Fixed a bug in ... entity object size to nearly 2GB. Added a temporary system property to disable "enhancement ... is old" checks. ...

 
release

2.6.9

... server. Fixed deletin g large transaction temporary files (in the experimental large transactions feature ). ... flush ( issue #272 ). Fixed a bug in using temporary files in large transactions. Fixed a bug in using ...

 
forum_thread

Index causes increased memory usage

Hello, ... plan uses too much memory. You can try decreasing the temporary file threshold , but that may slow performance. To ...