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unable to fix DB with Doctor (ArrayIndexOutOfBoundsException)

-------------------------- Group #1: Page#3 -1:1 0/30294 0+1980/59980594 Page#4 -1:1 1/30294 1980+1980/59980594 Page#5 -1:1 2/30294 3960+1980/59980594 Page#6 -1:1 3/30294 5940+1980/59980594 (...) Page#146638 -1:1 30291/30296 59976180+1980/59984284 Page#147012 -1:1 30292/30294 59978160+1980/59980594 Page

Index causes increased memory usage

2.37_22. Thanks in advance. cvtsc Dev Team There is no special cache for indexes. Pages that contain indexes are cached in the page cache, exactly as pages that contain data. Try analyzing a heap ... % Hopefully this helps? cvtsc Dev Team About 3.5GB are in use by the page cache (which has a size

High memory consumption even after close() of EntityManagerFactory

is held by ObjectDB in a database page object pool, with the purpose of reducing large object creation ... ("objectdb.temp.avoid-page-recycle", "true"); This can also be set as a JVM argument: > java ... -Dobjectdb.temp.avoid-page-recycle=true In addition, this memory will automatically be released

Occasionally slow requests in load testing

the Doctor. Internally, ObjectDB fills the new allocated pages with zeros and that requires extensive I/O ... this zero writing in order to see if it helps. If we disable this operation the new allocated pages ... " resize="256mb" page="2kb" /> <recovery enabled="true" sync="false" path="." max="128mb

Empty temporary dat files in the temp folder

BTC EmbeddedSystems The pages*.dat files are generated when objectdb.temp.page-file is enabled (as ... . Only one such file should be created per open database file with the initial size of 1000 pages (default page ... pagesTempFiles { public static void main(String[] args) {   System.setProperty("objectdb.temp.page-file

Best practise loading big data

data structures: Page cache Query caches Entity caches You may use the above links to the see default ... in the heap dump. support Support Hello, we use these settings: Page Cache <processing cache="256mb ... and how I can help. Kind regards, Rainer Lochmann btc_es BTC EmbeddedSystems > Page Cache <processing cache

ArrayIndexOutOfBoundsException: -1

. felixobjectdb Richard Szurgot It was a bug in the page cache. This cache can hold several different versions of the same database page (representing pages that were modified by different transactions) and it should serve the right version of every page for every user (depending when the operation has started

Doctor bug?

- Unexpected object count: 2 (actual 0) Page Content Errors ------------------- [1] Unexpected exception in page #3 entry #0: null [2] Unexpected exception in page #3 entry #1: null [3] Unexpected exception in page #4 entry #0: null [4] Unexpected exception in page #4 entry #1: null [5

Blocked by find

further information. felixobjectdb Richard Szurgot The stack trace is related to dilution of pages from the page cache when it becomes too loaded, but the reason for this exception is unclear. support ... in purging pages from the cache, i.e. #1 and #3 indeed reflect the same problem. "ODB-FileWriter

Unexpected error when loading all entity instance

.domain.entities.misc.LogEntry   - Unexpected object count: 773 (actual 772) Page Relation Errors -------------------- [1] Page #442580 unexpected exception: null [2] Page #442580 last key is null, parent page #94848 next key is '01f1e2e0-12cb-11e7-bda5-f6e38e607e99'|1 Page Content Errors

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ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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