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    <p><strong><code>-Xms:</code></strong> this option sets the initial and minimum Java heap size.</p> <p><strong><code>-Xmx:</code></strong> This option sets the maximum Java heap size. The Java heap (the “heap”) is the part of the memory where blocks of memory are allocated to objects and freed during garbage collection.</p> <p><strong><code>-XX:PermSize:</code></strong> <strong><code>-XX:MaxPermSize:</code></strong> are used to set size for Permanent Generation. The permanent space is where are stored the class, methods, internalized strings, and similar objects used by the VM and never deallocated (hence the name).</p> <p><strong><code>-Xss:</code></strong> sets the thread stack size. Thread stacks are memory areas allocated for each Java thread for their internal use. This is where the thread stores its local execution state.</p> <p><strong><code>-Xns:</code></strong> sets the nursery size. the JRockit JVM uses a nursery when the generational garbage collection model is used, that is, when the dynamic garbage collector has determined that the generational garbage collection model should be used or when the static generational concurrent garbage collector ( -Xgc : gencon) has been selected. You can also use -Xns to set a static nursery size when running a dynamic garbage collector (-XgcPrio).</p> <ul> <li><p>If you are getting <strong><code>java.lang.OutOfMemoryError: Java heap space</code></strong> than change the value of <code>-Xmx</code> and <code>-Xms</code>. </p></li> <li><p>if you are getting <strong><code>java.lang.OutOfMemoryError: PermGen space</code></strong> than try increasing the <code>- XX:MaxPermSize</code> value.</p></li> <li><p>if you are getting <strong><code>java.lang.StackOverflowError</code></strong> than try increasing the <code>-Xss</code> value. It may be helpful by increasing the stack size but you should have a look at your code as well.</p></li> </ul>
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    1. POWhich arguments stand for what in JVM memory options?
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    1. COThe Permgen space can be deallocated if you no longer have a reference to classes that have been loaded previously. Enabling PermgenSweep is a VM option. As a clarification, the nursery is used for short-lived object storage.
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      1. USMarkus Koivisto
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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