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135

Size of recording directory keeps growing

Hi, I am enabling recording at ObjectDB server... The database is quite busy updating state of objects. I am observing that the recording directory (*.odr.. 19GB!!) is keep growing, a hundred times ... of recording? Is there any setting in configuration file? Thank you Below are sizes of our database
130

Replaying recorded requests...

Hi, I get the following when ODB starts in embedded mode: Replaying recorded requests... then I ... " sync="false" path="." max="128mb" />     <recording enabled="false" sync="false" path="." mode="write ... " /> </database> Questions: 1) Why am I seeing this if I've set recording enabled to false? 2
129

find repeated records by JPQL

Hi, I know a single command in MySQL can find repeated records: Select * from TTT t where id in ... query from 430,000 records and put them into hashmap, finally it cost one hour and failed ... records, this code cost me 10 minutes and memory crash! So is there existing solutions to clean
126

How to Remove records from many to many relationship tables in JPA

here my requirement is i need to delete records in both tables (TransportationEvent and Conclusion) here i am trying to delete conclusion table records like bellow: removeConclusions(conclusion ... this to delete the records from Conclusion and TransportationEvent. Thanks in advance! lakshmi
126

large numbers of records

Hi, does anyone have experience with database with more than billion records (ie. more than 1000 million records) in one table. What is the limit of ObjectDB and is the database still fast. We are planing to do an application which handles document records and there metadata. peric.emil Emil Perić
125

RT Java application recording into 100DB run OOM after a few hours.

Hi, I am running a java application that records data from 100 feeds into 100 different database - this is done is one thread. It works fine several hours - and suddenly i got an out of memory issue ... .writeToDB(DB.java:39) DB.DB.write2DB(DB.java:59) DB.DBRecorder.record(DBRecorder.java:107) DB
125

DB Doctor with Recording enabled and using Database replication

When we need to run doctor on some DB file, which is used on ObjectDB master server. I suppose, that we need in that case delete recording data, and copy fixed file manually also to all slaves? Or ... ) database for the slave to start with and with no recording files. support Support
125

ObjectDB Unable to process 1.6 L records.

Hi I have a db of around 1.6 lakh records. But now am getting some unexpected error when accessing some of the entities. And when am fetching all the records using objectdb explorer its showing exception. I have diagnosis the db with objectdb doctor but not find any error. Please check
50

Database Transaction Replayer

ObjectDB can record its internal engine operations in special binary recording (journal) files. Recording is enabled by default and can be disabled in the configuration. The ObjectDB Replayer tool can apply recorded database operations on a matching database backup (if available). This ability
45

Database Management Settings

enabled="true" sync="false" path="." max="128mb" /> <recording enabled="false" sync="false" path ... when necessary). The <recording> element <recording enabled="false" sync="false" path="." mode="all" /> Database engine operations can be recorded in files and later replayed using the ObjectDB Replayer

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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