title: Unhandled Exception in 2.5.0
body: <p>After unloading two collections, ArangoDB 2.5.0 terminated with exception:</p>
  
  <pre><code>2015-03-20T14:59:58Z [9436] ERROR Unhandled exception: -1073741819
  </code></pre>
  
  <p>will crash now.</p>
  
  <p>Does anybody know what went wrong?</p>
  
  <p>Thanks in advance!</p>
  
  <p>Update 2015-05-18: verbose-log-mode shows this:</p>
  
  <pre><code>2015-05-18T07:10:50Z [1724] ERROR encountered out-of-memory error
  2015-05-18T07:10:50Z [1724] ERROR JavaScript exception in file 'd:/Program Files
  /ArangoDB/ArangoDB 2.5.3/share/arangodb/js/server/modules/org/arangodb/arango-st
  atement.js' at 86,45: [ArangoError 3: out of memory (while executing)]
  2015-05-18T07:10:50Z [1724] ERROR !  var result = AQL_EXECUTE(this._query, this.
  _bindVars, opts);
  2015-05-18T07:10:50Z [1724] ERROR !                                            ^
  
  2015-05-18T07:10:50Z [1724] ERROR stacktrace: Error: out of memory (while execut
  ing)\n  at Error (native)\n  at ArangoStatement.execute (d:/Program Files/Arango
  DB/ArangoDB 2.5.3/share/arangodb/js/server/modules/org/arangodb/arango-statement
  .js:86:45)\n  at d:/Program Files/ArangoDB/ArangoDB 2.5.3/share/arangodb/js/serv
  er/modules/org/arangodb/foxx/queues/manager.js:66:12\n  at Array.forEach (native
  )\n  at db._executeTransaction.action (d:/Program Files/ArangoDB/ArangoDB 2.5.3/
  share/arangodb/js/server/modules/org/arangodb/foxx/queues/manager.js:43:34)\n  a
  t [object ArangoDatabase].ArangoDatabase._executeTransaction (d:/Program Files/A
  rangoDB/ArangoDB 2.5.3/share/arangodb/js/server/modules/org/arangodb/arango-data
  base.js:142:10)\n  at Object.exports.manage (d:/Program Files/ArangoDB/ArangoDB
  2.5.3/share/arangodb/js/server/modules/org/arangodb/foxx/queues/manager.js:37:6)
  \n  at eval (&lt;anonymous&gt;:2:51)\n  at eval (&lt;anonymous&gt;:3:7)\n  at eval (&lt;anonymo
  us&gt;:3:19)\n
  
  
  #
  # Fatal error in ..\..\src\heap\mark-compact.cc, line 2137
  # CHECK(success) failed
  #
  2015-05-18T07:10:52Z [1724] ERROR Unhandled exception: -1073741819 - will crash
  now.
  </code></pre>