Dear Mansi,

you could try to run the INSPECT command on the affected database, or all databases, in order to find out if your database has gone corrupt. Did you repeatedly come across this error?

Best,
Christian

Am 25.04.2016 16:45 schrieb "Mansi Sheth" <mansi.sheth@gmail.com>:
>
> Hello, 
>
> My current BaseXDB is at 920GB, with ~230 databases... I run jetty server visa basexhttp script with giving it explicit 30GB of RAM. While trying to access a query, thru REST api via XQUERY, I get below error. 
>
> HTTP/1.1 400 Bad Request^M
> Content-Type: text/plain;charset=UTF-8^M
> Content-Length: 4207^M
> Server: Jetty(8.1.16.v20140903)^M
> ^M
> Improper use? Potential bug? Your feedback is welcome:
> Contact: basex-talk@mailman.uni-konstanz.de
> Version: BaseX 8.2.3
> Java: Oracle Corporation, 1.7.0_95
> OS: Linux, amd64
> Stack Trace:
> java.lang.RuntimeException: Data Access out of bounds:
> - pre value: 126882320
> - #used blocks: 495643
> - #total locks: 495643
> - access: 495642 (495643 > 495642]
>         at org.basex.util.Util.notExpected(Util.java:60)
>         at org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:458)
>         at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:148)
>         at org.basex.data.Data.kind(Data.java:306)
>         at org.basex.query.value.node.DBNode.<init>(DBNode.java:51)
>         at org.basex.query.value.seq.DBNodeSeq.itemAt(DBNodeSeq.java:68)
>         at org.basex.query.value.seq.DBNodeSeq.itemAt(DBNodeSeq.java:22)
>         at org.basex.query.value.seq.Seq$1.next(Seq.java:77)
>         at org.basex.query.expr.path.IterPath$1.next(IterPath.java:58)
>         at org.basex.query.expr.path.IterPath$1.next(IterPath.java:36)
>         at org.basex.query.MainModule$1.next(MainModule.java:114)
>         at org.basex.query.func.StandardFunc.cache(StandardFunc.java:384)
>         at org.basex.query.func.xquery.XQueryEval.eval(XQueryEval.java:129)
>         at org.basex.query.func.xquery.XQueryEval.eval(XQueryEval.java:59)
>         at org.basex.query.func.xquery.XQueryEval.value(XQueryEval.java:49)
>         at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:77)
>         at org.basex.query.QueryContext.value(QueryContext.java:421)
>         at org.basex.query.expr.gflwor.Let$LetEval.next(Let.java:187)
>         at org.basex.query.expr.gflwor.GFLWOR$1.next(GFLWOR.java:95)
>         at org.basex.query.MainModule$1.next(MainModule.java:114)
>         at org.basex.core.cmd.AQuery.query(AQuery.java:91)
>         at org.basex.core.cmd.XQuery.run(XQuery.java:22)
>         at org.basex.core.Command.run(Command.java:398)
>         at org.basex.http.rest.RESTCmd.run(RESTCmd.java:99)
>         at org.basex.http.rest.RESTQuery.query(RESTQuery.java:74)
>         at org.basex.http.rest.RESTRun.run0(RESTRun.java:41)
>         at org.basex.http.rest.RESTCmd.run(RESTCmd.java:65)
>         at org.basex.core.Command.run(Command.java:398)
>         at org.basex.core.Command.execute(Command.java:100)
>         at org.basex.core.Command.execute(Command.java:123)
>         at org.basex.http.rest.RESTServlet.run(RESTServlet.java:22)
>         at org.basex.http.BaseXServlet.service(BaseXServlet.java:64)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
>         at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
>         at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
>         at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
>         at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
>         at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
>         at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
>         at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
>         at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
>         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
>         at org.eclipse.jetty.server.Server.handle(Server.java:370)
>         at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
>         at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971)
>         at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033)
>         at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
>         at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
>         at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
>         at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
>         at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
>         at java.lang.Thread.run(Thread.java:745)
>
>
> --
> - Mansi