ObjectDB Database Search

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression max (    Expression  x ) Create an aggregate expression applying the numerical max operation. Parameters: x - expression representing input value to max operation Return: max expression Since: JPA 2.0

These are questions asked in the context of the proposed architecture described in the forum thread titled, "Sample JDO Architecture for Follow Up Questions".   In the objectdb.conf file (attached to forum thread mentioned above), I set Database max -threads.  In the documentation

What’s the max transaction size, or how is it determined? Trianglehead Json Error The main limit is the available memory in the JVM. There is no hard limit. support Support

Error using query with MAX() function

Exceeding max connections and crashing

(count, sum, avg, max , min) that are carried out on all the objects (or the object tuples) in ... of comparable values (numeric, strings, dates). MAX - returns the maximum of comparable values ... an expression representing the minimum of comparable values. max , greatest  - return an 

, max ) - for paging. Query Structure SELECT (including NEW ). FROM (including INNER JOIN , LEFT OUTER ... and aggregates ). ORDER BY (including ASC, DESC). Aggregates (COUNT, SUM, AVG, MAX , MIN). Query

and the database file can improve performance. The max attribute is a hint that specifies the space ... for caching pages of the database file. The max -threads attribute specifies the maximum number

. The two following expressions are equivalent ( :min and : max are query parameters ): x BETWEEN :min AND : max x

can be specified as a comma separated list of elements. Use the [First] and [ Max ] fields to set

when connecting to the database (as explained in the JPA Overview section in chapter 3). The max attribute

;( where ). Criteria GROUP BY / HAVING  ( groupBy , having , count , sum , avg , min , max

, HAVING, IN, INDEX, INNER, IS, JOIN, KEY, LEADING, LEFT, LENGTH, LIKE,LOCATE, LOWER, MAX , MEMBER, MIN

, which is specified by the max attribute. The stdout and stderr attributes specify if log messages

( where ). GROUP BY / HAVING clauses ( groupBy , having , count , sum , avg , min , max , ...). ORDER BY

do not support aggregate queries ( max , min, count, sum and avg). ObjectDB supports rich queries

and the others seems to be waiting in synchronized. Here are some ideas for checking: Smaller  processing =  max -threads (the default is 10 and you are using 400). Different values for  recovery = max (try smaller ... a while the recovery file is emptied and that may consume I/O operations. Maybe smaller max recovery

-8553-cc5688ba142d') ORDER BY MAX ($1.createDate) DESC   but this query returns an exception ... JOIN $1.recipient $2 WHERE ($2.id='22afeafe-363f-4397-8553-cc5688ba142d') ORDER BY MAX ($1.createDate ... $1 JOIN $1.recipient $2 WHERE $2.id='22afeafe-363f-4397-8553-cc5688ba142d' ORDER BY MAX ($1

.spec.MrProrationSpec STARTED mr.controllers.spec.MrProrationSpec max _rate_target_below_first STARTED mr.controllers.spec.MrProrationSpec max _rate_target_below_first STANDARD_ERROR [2020-09-03 22:03 ... :03:34 #19 type.registry] New type java.util.ArrayList mr.controllers.spec.MrProrationSpec max _rate

- expression y - value Return: less-than predicate Since: JPA 2.0 Expression max ( Expression  x) Create an aggregate expression applying the numerical max operation. Parameters: x - expression representing input value to max operation Return: max expression Since: JPA 2.0 Expression min

specifies restrictions on connections to the server. The max attribute specifies the maximum simultaneous connections allowed by the server. The user- max attribute specifies the maximum simultaneous ... above, there is no point to specifying different values for the max and user- max attributes

 have at least 2GB RAM, I don't think that running the Doctor with 512MB max heap size ... Walkowski I just checked the 64MB sample database. With 512MB max heap size ( -Xmx512m ) it works ... seconds to rebuild a new database. With 256MB max heap size I got the same  OutOfMemoryError

The application works fine with only 256MB heap size with objectdb 1.0  But on 2.0 even with max heap ... more than 64mb at a time. In this application my odb file that needs to be generated can be a max ... that is being generated reaches a size of around 700mb to 800mb (which is close to max heap size of 1012mb

=” Max ”; familyName=”Mustermann”; address=”26135 Oldenburg”] V1.1:  EntityPerson{ String name; String address; }     DB2: [name=” Max Mustermann”; address=”26135 Oldenburg”] V2.0: EntityPerson{ String name; String zip; String city;}     DB3: [name=” Max Mustermann”; zip

' And the Application stopped working. 2) * Batch ended at '2LG' * Batch ended at '2oq' * Batch ended at MAX ... ended at '2oq' * Batch ended at MAX If MAX is the last, then it looks like that every thing is ok. 3

with max results limit. Viewing all the objects of a class without a query and max result limit is not

) INFO: Created EjbThreadPoolExecutor with thread-core-pool-size 16 thread- max -pool-size 32 thread ... EjbThreadPoolExecutor with thread-core-pool-size 16 thread- max -pool-size 32 thread-keep-alive-seconds 60

servers one running JBOSS and other running ObjectDB. - CPU utilization of JBOSS server is max 5-10 ... are unclear. For example: - CPU utilization of JBOSS server is max 5-10% (per core) - CPU

= new String[2] ;   test[0] = "connection port=6136 max =100" ;   test[1] = "start";   ... command or argument: connection port=6136 max =100 (error 531) Am not sure this is the right place to ask

(because it is stored on an Amazon EBS disk which has max performance at that size and reduces monetary fees by having ... on an Amazon EBS disk which has max performance at that size and reduces monetary fees by having fewer

questions regarding the configuration entry: ... ... max -threads we have 16 processor cores and around 400 clients communicating to our core process, each accessing objectdb. What is the best ... -Georg Zwicker With 16 processor cores the optimum could be around max -threads="16

and indices needs only more ram memory, but not more and more memory. And if the max heap memory is big ... . What happens when you run the program with a smaller max heap size?   support Support If I

is retained as part of the named query definition. This includes configuration information such as max

definition. This includes configuration information such as max results, hints, flush mode, lock mode

Integer. MAX _VALUE if setMaxResults was not applied to the query object. Return: maximum number

JPA Method in javax.persistence.Query int getMaxResults () The maximum number of results the query object was set to retrieve. Returns Integer. MAX _VALUE if setMaxResults was not applied to the query object. Return: maximum number of results Since: JPA 2.0

the query object was set to retrieve. Returns Integer. MAX _VALUE if setMaxResults was not applied

() The maximum number of results the query object was set to retrieve. Returns Integer. MAX _VALUE

an object by persisting it again with [id, max -revision + 1]. Add another indexed boolean field

to have configuration settings to control the connection pool (min/ max connections, etc...). Thanks, Carl

Integer. MAX _VALUE) {     System.err.println("Can't add any more");    

);   try {    long l = (Long) q.getSingleResult();    if(l Integer. MAX

.retry. max ", "10"); // Wait 100 milliseconds between every two tries: System.setProperty("com.objectdb

There seems to be a bug in the JDOQL processor in recent versions of ObjectDB. I've uploaded a "laptop" example to demonstrate the problem. The query in Test1.main should return "ThinkMachine MAX SX ... ) correctly return "ThinkMachine MAX SX 20". Regards. kk8yukawa Keitaro Yukawa Thank you for this report

ObjectDB 2.8.7.b08 Our entities are not enhanced and we execute a query "select max (uid) from ModelElementImpl". In the objectdb.conf the reflection is set to error. ...   We got following ... ;    "select max (uid) from MyEntity").getResultList();      

= "$objectdb/log/odb" max = "8mb" stdout = "false" stderr = "false" / path = "$objectdb/log/odb/archive ... " max = "8mb" stdout = "false" stderr = "false" /              

, so it should be possible. Could you please try setting the  max -threads attribute in your configuration to 0

widthPxSideBarLeft = 250;     @Min(150)     @ Max (400)    

-based exclusive end index, or {@link Long# MAX _VALUE} for no limit. Since: JDO 2.0 void setResult

-based inclusive start index toExcl - 0-based exclusive end index, or {@link Long# MAX _VALUE} for no limit. Since: JDO 2.0