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Oracle® Java Micro Edition Embedded Client Release Notes
Release 1.1.1
E23816-02
 

 

Oracle® Java Micro Edition Embedded Client

Release Notes

Release 1.1.1

E23816-02

May 2013

These Release Notes describe platform requirements, documentation, installation, new features, known problems and issues, and documentation accessibility for the Oracle Java Micro Edition Embedded Client.

Table of Contents

Introduction

Platforms and Requirements

Documentation

Installation Instructions

New in this Release

Known Problems and Issues

Documentation Accessibility

Introduction

Oracle Java Micro Edition Embedded Client is a Java platform that can be deployed to a number of embedded devices including, but not limited to, set-top boxes, electronic book readers, multi-function printers, residential gateways, smart utility meters, network attached storage, and Internet phones.

Platforms and Requirements

You use two platforms when you work with Oracle Java Micro Edition Embedded Client: the host and the target. The host is the personal computer on which Oracle Java Micro Edition Embedded Client applications are built. The target is the device where applications run.

Host Requirements

The host is an x86 personal computer running Linux. The following table gives the detailed host requirements.

Requirement Description

CPU

1.0 GHz x86 family (or faster)

Memory

1GB RAM (or more)

Free disk space

10GB (or more)

Operating System

Linux - Ubuntu 10.04

Java Developer's Kit (JDK)

1.6.0 (latest version)


Target Requirements

This release supports targets based on three CPU architectures: ARM, MIPS, and x86. Older Linux kernels and glibc libraries might work, but this section lists the tested versions.

ARM Target Requirements

The following table gives requirements for ARM-based targets.

Requirement Description

CPU

ARM v5, v6, or v7

Floating Point

Soft

ROM

At least 5MB for Java

RAM

At least 8MB for Java

Operating System

  • v5: Linux kernel 2.6.31 or higher; glibc 2.10.2 or higher

  • v6/v7: Linux kernel 2.6.35 or higher, glibc 2.12.1 or higher


MIPS Target Requirements

The following table gives requirements for MIPS-based targets.

Requirement Description

CPU

MIPS32 74K

Floating Point

Hard

ROM

At least 5MB for Java

RAM

At least 8MB for Java

Operating System

Linux kernel 2.6.22 or higher; glibc 2.8 or higher


x86 Target Requirements

The following table gives requirements for x86-based targets.

Requirement Description

CPU

Pentium III or higher

Floating Point

Hard

ROM

At least 5MB for Java

RAM

At least 8MB for Java

Operating System

Linux kernel 2.6.35 or higher; glibc 2.12.1 or higher


Documentation

In addition to these Release Notes, the following documents are included in the Oracle Java Micro Edition Embedded Client documentation set:


Note:

The Oracle Java Micro Edition Embedded Client Architecture Guide is a prerequisite for all Oracle Java Micro Edition Embedded Client guides. It defines concepts that are mentioned in the other guides.


Installation Instructions

Follow these installation instructions:

  1. On the host computer, unzip the downloaded product zip file, which creates the directory ojec1.1.1/.

  2. Copy the ojec1.1.1/bin/ and lib/ directories to the target device, or mount them across the network.

  3. Use the following commands on the target to verify the installation:

    % cd ojec1.1.1
    % bin/cvm -version
    

New in this Release

The following changes have been made to Oracle Java Micro Edition Embedded Client 1.1.1:

Refer to the Oracle Java Micro Edition Embedded Client Architecture Guide for the definitive list of components and versions supported in this release.

Known Problems and Issues

This section describes known problems and issues in this release.

Debugging Limitations

  • Only interpreted code can be debugged.

  • Oracle Java Micro Edition Embedded Client debugger connections use sockets. Shared memory connections are not supported.

Profiling Limitations

  • To profile with the NetBeans IDE, use version 7.0.

    An OutOfMemoryException might be thrown if there is not enough memory for the class file instrumentation code to run to completion before garbage collection occurs. If this happens, increase the heap size. For example, this option sets the heap to 64 megabytes: -Xmx64m.

  • JVMTI CPU profiling measures the time spent between method entry and exit. Should a method call out to native C code, the profiling tool is unaware of whether the application is blocked or looping. In order to eliminate discrepancies in the results, a NetBeans "Customized Filter Set" can be used to exclude methods that call out to native code.

  • Heap-dump is not currently implemented.

  • Profiling of ROMized system classes is not supported.

  • While configuring Attach Mode options, the Select Target Type menu option "Attach Method" must be set to "Remote" for working with Oracle Java Embedded Client. The "Local" mode is not supported.

Documentation Issues

No known issues.

Documentation Accessibility

For information about Oracle's commitment to accessibility, visit the Oracle Accessibility Program website at http://www.oracle.com/pls/topic/lookup?ctx=acc&id=docacc.

Access to Oracle Support

Oracle customers have access to electronic support through My Oracle Support. For information, visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=info or visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=trs if you are hearing impaired.


Oracle® Java Micro Edition Embedded Client , Release 1.1.1

E23816-02

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