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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3713) memory leak when insert rows into a table using org.apache.derby.jdbc.EmbeddedDriver
Date Fri, 06 Jun 2008 03:36:45 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602897#action_12602897
] 

Bryan Pendleton commented on DERBY-3713:
----------------------------------------

Due to the presence of page and record caches, the Derby memory usage will
tend to grow initially, until the cache is filled, at which point the memory usage
will level out and stabilize.

You can control the size of the cache with Derby system properties.

More information about memory usage, and about controlling the cache size,
is provided in the Derby documentation.

> memory leak when insert rows into a table using org.apache.derby.jdbc.EmbeddedDriver

> -------------------------------------------------------------------------------------
>
>                 Key: DERBY-3713
>                 URL: https://issues.apache.org/jira/browse/DERBY-3713
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.4.1.3
>         Environment: solaris and macos,  jdk1.5
>            Reporter: Peter Schi
>            Priority: Critical
>
> I downloaded the latest derby and I only modified the SimpleApp.java which came with
the software under db-derby-10.4.1.3-bin/demo/programs/simple  directory by inserting a larger
string into the same table and I inserted the same data for 10000 times, just using the default
driver which was org.apache.derby.jdbc.EmbeddedDriver 
> I found out that there was memory leak, the size of used memory got increased and was
about the same size of total data inserted into the table.
> For example, if  2MB size of data was inserted into the table, then the size of used
memory was increased by 2MB as well.
> The memory leak still happened even if the database was shut down.

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