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Problem on JPA Merge Entity.

is based on a web page (http://localhost:8080/ERGO_ObjectDB/) On this web page we can found 4 links ... component to statement and update statement. Works except the update. The statement is returned to the page

Evaluation License

. As noted on the license page: ObjectDB can also be used freely (including commercially ... on the license page. Larger companies are required to purchase a license to remove this restrictions ... ouba64 Ouba Mahamane That answer was given in the forum when the license page included the following

zip file or JAR manifest missing

(){   int iCnt = 10;   while (--iCnt>=0){    trans.begin();    Page uri = new Page();    uri.setsUrl ... (String[] args) {   SingleManager.clearDB("Page");   SingleManager.clearDB("URI");   new PageTest

Database corrupted after schema change

) Analyzing database structure... 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Page Content Errors ------------------- [1] Page #19753 entry 0 has unexpected field count (7 instead of 5) 0. oid => '567651 ... .analyzer.advanced_selection.RackCategorySelectorPanel$1' eu.extech.quant.TC(624):567651 [2] Page #33279

ObjectDB CRUD Examples

CRUD operations are explained and demonstrated in these manual pages. We do not have specific ... experience with JPA. For example a few pages before the CRUD section on this page you could read

Cache usage

Zwicker The heap dump shows usage of several ObjectDB caches: Page Cache (processing cache="2048mb") It seems that when the heap dump was taken the size of the database page cache was about 1.4GB ... all the free RAM for database file pages, so if you have sufficient free RAM it is expected to be used

auto-generated uuid fields

. However the page on generated values in your JPA tutorial only mentions numeric generated values ... of the JDO standard you don't support. At the minimum, your documentation page at http://www.objectdb.com ... was added to that documentation page. The issue tracking system enables listing all the unsupported JDO

Negative snapshot user count exception

:05:23 #188 *] transaction Id = 506009, new file size = 297009152, dirty pages = 1, update list s = 2, dirty page map = 1, FastModel Ben Schreiber Thank you for this report. It indicates ... to extending the database (allocating new database pages). Could you please provide more details


exception due to an attempt to locate a page with a negative ID in the cache, where page IDs ... of the database? What is the size of the page cache, as specified in the configuration. Can you identify

[ObjectDB 2.5.5_03] Unexpected exception (Error 990)

/persistence-2.0-fr-eval-oth-JSpec/ The chapter dealing with null handling starts on page 168. It's derived from SQL99 to which most RDBMS claim to be compatible. Let's analyze my query: Page 168 states ... .lastGeocodedPosition.receiveTime < :receiveTime with a NULL value evaluates to UNKNOWN. The OR table on page

Getting Started

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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