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Issue
4

Use temporary files to enable very large transactions

for many activities (e.g. processing large query results), currently the size of a transaction (i.e. the total size of database pages that have to be replaced) is limited by the JVM heap size. Supporting ... : What is the total size of data in the transaction? What combination of DELETE / INSERT / UPDATE operations
Forum
4

Out of memory

.OutOfMemoryError: GC overhead limit exceeded GC overhead limit exceeded Database size is only 67MB, heap size is set to 1536MB. Log files are empty. Database uptime was about 3 weeks. It's still version ... lot of data from other source). I didn't catch the size of record log file. For now I turned on heap
Issue
4

Server out of memory exceptions

writer and single reader. The message size going into the queue is not large - around 4k at most. Each ... reader. The msg size being saved should be around 2mb. The server is running with -Xms256m -Xmx256m ... at most we should have 12 clients loading a 2mb msg - so 24mb raw data size? (Let me know if I've got this wrong
JPA Doc
4

javax.persistence.AttributeOverride

(name="value.size", column=@Column(name="SQUARE_FEET ... class PropertyInfo { Integer parcelNumber; Integer size; BigDecimal tax
Forum
4

Soft Reference Object Cache Recommendation

size limit being exceeded before the post attempt.  =(  ) I desire to have my persistent objects ... cache and use 1 MB for the ObjectDB Datastore page file cache with page file size of 64 KB.  Here are relevant objectdb.conf settings: <size initial="64kb" resize="64kb" page="64kb" />
Forum
3

ObjectDB's Database Doctor Incorrect Error Report

. Have you set the database page size to 256KB? The maximum supported page size is 64KB, but unfortunately ... there will be a clear limit of 64KB. Thank you for this report. To avoid this error use page size of 64KB or ... page size?  For my use case, this would make 4 less disk accesses in the Amazon AWS EC2 provisioned
Forum
3

Occasionally slow requests in load testing

size, to avoid resizing. The initial size was set to 4.5GB. It was running great for 6 hours ... path="$temp/ObjectDB" threshold="8mb" /> size ... " /> <size initial="4608mb" resize="256mb" page="2kb" />
JDO Doc
2

FetchPlan.fetchSize

Annotation Element javax.jdo.annotations.FetchPlan int fetchSize The number of instances of multi-valued fields retrieved by queries. Returns: the fetch size Default value: 0 Since: JDO 2.1
JDO Doc
2

javax.jdo.annotations.FetchPlan

. Returns: the fetch size Default value: 0 Since: JDO 2.1 int maxFetchDepth The depth of references
JDO Doc
2

setUnique(unique)

Method javax.jdo.Query void setUnique(   boolean unique ) Specify that only the first result of the query should be returned, rather than a collection. The execute method will return null if the query result size is 0. Parameters: unique - if true, only one element is returned Since: JDO 2.0