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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
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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
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EM close causes an exception

the "objectdb.temp.page-file" system property, which is probably used only by your company ... System.setProperty("objectdb.temp.page-file", "true"); then the execution of parallel threads works without errors ... System.setProperty("objectdb.temp.page-file", "true"); System.setProperty("objectdb.temp.no-temp
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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
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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
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ArrayIndexOutOfBoundException

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
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auto-generated uuid fields

. However the page on generated values in your JPA tutorial only mentions numeric generated values ... page at http://www.objectdb.com/api/java/jdo/annotations/IdGeneratorStrategy which lists the UUIDHEX ... Jonathan Harley A comment was added to that documentation page. The issue tracking system enables
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again merger missing logs + objectdb exception

one database page are split by ObjectDB into multiple sections and each section is stored in a separate page ... ] RetrievalTask.reportSecondaryResult: page#21867681, reader.getPos() = 497 [2017-10-17 21:57:29 #97
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[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
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DBDoctor BTree Errors

.pool.PoolImpl - Unexpected page count: 958 (actual 1) - Unexpected object count: 9043 (actual 1) [2] com.btc.ep.architecture.bl.internal.dmos.pool.PoolScopeImpl - Unexpected page count: 8 (actual 1 ... .ProfileImpl - Unexpected object count: 5 (actual 1) btc_es BTC EmbeddedSystems It indicates mismatch in 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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