✎ [V7] ISSUE: java.lang.OutOfMemoryError: Java heap space Message: Java heap space [Ahsay Wiki]

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
===== [V7] ISSUE: java.lang.OutOfMemoryError: Java heap space Message: Java heap space =====

<html>
 <b>
  Article ID:
 </b>
 5321
 <br/>
 <b>
  Reviewed:
 </b>
  2018-03-20 
 <br/>
 <br/>
 <b>
  Product Version:
 </b>
 <br/>
 AhsayACB / AhsayOBM: 7.3.0.0 to 7.x
 <br/>
 OS: All platforms
</html>


<html>
<FONT COLOR=red SIZE=+1>
<B>ATTENTION</B>
1st January, 2022: v7 officially End-of-Life [<A HREF=https://wiki.ahsay.com/doku.php?id=public:announcement:ahsay_v7_eol>details</A>]
</FONT>
</html>
===== Problem Description =====
<html>
When performing a backup of any type, the following error message is received in the backup report:
 <br/>
 <table border="0" cellpadding="0" cellspacing="0" width="850">
  <tr>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    No.
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Type
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Timestamp
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Log
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    ...
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    info
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
Start running post-commands
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    ...
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    <font color=red>
    erro
    </font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    <font color=red>
    YYYY/MM/DD hh:mm:ss
    </font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
   <font color=red>
    [BackupIpcThread.doRunException] error: java.lang.OutOfMemoryError: Java heap space<br>
    Message: Java heap space
    </font>
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    ...
   </td>
  </tr>
 </table>
 </html>


===== Cause =====
<html>
The message suggests that the AhsayOBM / ACB client application had ran out of memory during the backup process.
</html>


===== Resolution =====
<html>
To resolve the issue, perform the following steps:

<ol>
<li><font color=black>Confirm on the amount of free memory available on the client computer prior to a backup.</font></li><br>

<li><font color=black>Increase the Java heap size setting according to the free memory available and memory usage during a backup on the client computer. 
<br>
<br>
The instructions can be found by 
<a href="http://wiki.ahsay.com/doku.php?id=public:5003_faq:how_do_i_modify_the_java_heap_size_setting_of_ahsayobm_or_ahsayacb">Clicking Here</a>.
<br>
<br>
<font color=red>Important Note:</font>
<br>
Please note that there is no concrete recommendation for the Java heap size setting, because that will depend greatly on the client computer's setup, size of backup (in terms of number of files and files' size), and the user's backup behavior. &nbsp;As a rule of thumb when adjusting the Java heap size setting:
<br>
<br>
<ul>
<li><font color=black>
Do not set the heap size to a value larger than 60% of the actual RAM (physical memory) available on the client computer.
<br>
<br>
<li><font color=black>
Increase Xmx (maximum heap size) in small increments (e.g. 512 MB at a time), until you no longer experience the java.lang.OutOfMemoryError error. 
<br>
<br>
This is because increasing the heap beyond the capabilities of the client computer to adequately Garbage Collect (GC) can cause other problems (e.g. performance issue / freezing).
<br>
<br>
<u>Do not</u> blindly set the heap size to a ridiculously large value.
<br>
<br>
</font>
</li>
<li><font color=black>
Consider setting Xms (initial heap size) and Xmx (maximum heap size) to the same value, to minimize Garbage Collections (GC) and to prevent wasting JVM resources used to constantly grow and shrink the heap.
</font>
</li>
</ul>
</ol>
</html>

===== Keywords =====
OutOfMemoryError, java, heap, space, memory, crash
User Tools

Site Tools

Page Tools
