Contents

Title and Copyright Information

Preface

• About this Document
• Documentation Accessibility
• Conventions

1 Changes in Supported Configurations in Oracle JRockit JDK R28

• Java Version Updates
• Hardware Must Support Streaming SIMD Extensions (SSE) 2
• J2SE 1.4.2 and JVMPI Not Supported
• Itanium Platforms Not Supported

2 New Features and Changes in Oracle JRockit JDK R28

• Changes in R28.3.20
  • Upgraded to JDK 6u211
  • Disabled All DES TLS Cipher Suites
  • Removal of Several Symantec Root CAs
  • Removal of Baltimore Cybertrust Code Signing CA
  • Removal of SECOM Root Certificate
  • Improved Validation of Class-Path Attribute in JAR File Manifest
  • Improved Cipher Inputs
• Changes in R28.3.19
  • Upgraded to JDK 6u201
• Changes in R28.3.18
  • Upgraded to JDK 6u191
  • TLS Session Hash and Extended Master Secret Extension Support
  • Enhanced KeyStore Mechanisms
  • 3DES Cipher Suites Disabled
  • Server-side HTTP-tunneled RMI Connections Disabled
  • CipherOutputStream Usage
  • System Property Controls the java.util.logging.FileHandler's MAX_LOCKS Limit
• Changes in R28.3.17
  • Upgraded to JDK 6u181
  • Support DHE Sizes Up To 8192-bits and DSA Sizes Up To 3072-bits
  • Support SHA224withDSA and SHA256withDSA in the SunJSSE provider
  • Add Additional IDL Stub Type Checks To org.omg.CORBA.ORBstring_to_object Method
  • RSA Public Key Validation
  • Restrict Diffie-Hellman Keys Less Than 1024 Bits
  • Provider Default Key Size is Updated
  • Stricter Key Generation
  • Unlimited Cryptography Enabled by Default
  • Disable Exportable Cipher Suites
  • Disable JARs Signed with DSA Keys Less Than 1024 Bits
  • Added wsimport Tool Command Line Option ???disableXmlSecurity
  • JMX Connections Need Deserialization Filters
• Changes in R28.3.16
  • Upgraded to JDK 6u171
  • Support DHE Sizes Up To 8192-bits and DSA Sizes Up To 3072-bits
  • Refactor Existing Providers to Refer to the Same Constants for Default Values for Key Length
  • Collections Use Serialization Filter to Limit Array Sizes
  •  Default Timeouts Have Changed for FTP URL Handler
  • New Defaults for DSA Keys in Jarsigner and Keytool
• Changes in R28.3.15
  • Upgraded to JDK 6u161
  • Improved Algorithm Constraints Checking
  • JMX Diagnostic Improvements
  • Message Digest Algorithm for jarsigner -tsadigestalg Option Now Defaults to SHA-256
• Changes in R28.3.14
  • Upgraded to JDK 6u151
  • IANA Data 2016j
  • MD5 signature verification added to the Security Property jdk.jar.disabled Algorithms
  • New system property to control caching for HTTP SPNEGO connection
  • New System Property to Control Caching for HTTP NTLM Connection
• Changes in R28.3.13
  • Upgraded to JDK 6u141
  • IANA Data 2016i
  • Improved protection for JNDI remote class loading
  • jarsigner -verbose -verify should print the algorithms used to sign the jar
  • Added security property to configure XML Signature secure validation mode
  • Serialization Filter Configuration
  • RMI Better constraint checking
  • Add mechanism to allow non default root CAs to not be subject to algorithm restrictions
  • New --allow-script-in-comments option for javadoc
  • Increase the minimum key length to 1024 for XML Signatures
  • Make 3DES a legacy algorithm in the JSSE provider
  • Improve the default strength of elliptic curve cryptography in JDK
  • Restrict certificates with DSA keys less than 1024 bits
  • Add TLS v1.1 and v1.2 to the client list of default-enabled protocols
  • More checks added to DER encoding parsing code
  • Additional access restrictions for URLClassLoader.newInstance
• Changes in R28.3.12
  • Upgraded to JDK 6u131
• Changes in R28.3.11
  • Upgraded to JDK 6u121
  • Support for TLS v1.2
• Changes in R28.3.10
  • Upgraded to JDK 6u115
• Changes in R28.3.9
  • Upgraded to JDK 6u111
  • Support for TLS v1.1
  • New Diagnostic Command to Generate Core File
• Changes in R28.3.8
  • Upgraded to JDK 6u105
  • New Command-Line Options for Generating Core Dump Files on Exception
• Changes in R28.3.2
  • New Default Value for the -XX:+CheckStacks Command-Line Option
  • New Command-Line Option to Disable Garbage Collection of Constant Pool
  • New Verbose Option for Shutdown Report
• Changes in R28.2.3
  • New Default Value for the -XX:MaxLargePageSize Command-Line Option
• Changes in R28.2.2
  • Fixed Issues in Finalization
• Changes in R28.2.0
  • Improved JRockit Flight Recorder Heap Statistics Events
  • Command-Line Options to Filter Exception Logging and Events
• Changes in R28.1.5
  • JRockit Mission Control Samples are No Longer Installed by Default
• Changes in R28.1.0
  • Improved Garbage Collection
  • Command-Line Option to Specify the Receive Buffer Size
  • Enabling JVM Crash When an Out-of-Memory Error Occurs
  • Collecting and Packaging Flight Recording Data from Disk Buffers
• Changes in R28.0.1
  • Default MaxCodeMemory on Linux IA32 with Large Pages Increased to 64 MB
• New Features and Changes in R28.0.0
  • Change in Thread Suspension Mechanism
  • Ability to Generate HPROF-Formatted Heap Dumps
  • Improved Logging for Code Generation and Optimization
  • Better Control Over Code Optimization Through Directives
  • Garbage Collection Strategy Does Not Change at Run Time
  • Large Objects Are Allocated in the Nursery
  • Single Command-Line Option to Specify Compaction Behavior
  • Changes in the JMX Agent
  • Compressed References for Larger Heaps
  • Changes in Heap Sizing
  • Change in Class and Code Garbage Collection
  • New Command-Line Options in R28.0
  • Command-Line Options Deprecated in R28.0
  • Command-Line Options Changed to the HotSpot Format in R28.0

3 Issues Resolved in Oracle JRockit JDK R28

• Issues Resolved in R28.3.20
• Issues Resolved in R28.3.19
  • JVM Hang During Startup on Processors with Large Number of Logical Processors
  • Immediate Crash During Startup with Linux on Recent x86 / x86_64 Processors
• Issues Resolved in R28.3.18
  • MissingResourceException Thrown While Trying to Load ResourceBundle via Reflection
• Issues Resolved in R28.3.17
• Issues Resolved in R28.3.16
• Issues Resolved in R28.3.15
• Issues Resolved in R28.3.14
  • Correction of IllegalArgumentException from TLS handshake
• Issues Resolved in R28.3.13
• Issues Resolved in R28.3.12
  • Hashtable Deserialization Reconstitutes Table with Wrong Capacity
• Issues Resolved in R28.3.11
  • Corrupted Heap Data Resulting in Stability Issues
  • Incorrect Value for Dark Matter Reported by Heap Diagnostics
  • Incorrect Heap Statistics When Instances of a Class Consume Over 2 GB of Heap Space
  • Hardware Support for Square Root on SPARC T2
  • Default Number of Garbage Collection Worker Threads on Certain Solaris Systems
  • JVM Crashes when Using Application Data Integrity Features
  • Unexpected Behavior when Copying Arrays
• Issues Resolved in R28.3.10
  • Crash while Running Finalizer for the ConstPoolWrapper Object
  • Crash due to Incorrectly Compiled (JIT) checkcast Operation
  • Unexpected Behavior when Inlining a Method
• Issues Resolved in R28.3.9
  • Issues with the ObjectStreamClass.lookup Method
  • Process Hangs after NewStringUTF Invocation
• Issues Resolved in R28.3.8
  • Incorrect CPU Consumption Values on Linux
  • Unexpected NoSuchMethodError in JRockit JVM
• Issues Resolved in R28.3.6
  • JRockit JVM Crashes while Debugging a Java Program Compiled with javac
  • JVM Crashes while Using an Agent
• Issues Resolved in R28.3.5
  • Issue with Profiling Methods
  • JVM Crashes with Illegal Memory Access Error Due to an Optimization Issue
• Issues Resolved in R28.3.4
  • Reduced Memory Footprint of Command-line Tools
  • JRockit Crashes while Calling jrockit.vm.ArrayCopy.copy Methods
• Issues Resolved in R28.3.2
  • Issue with Flight Recording During Startup
  • Check Stacks Option on SPARC Platform
  • Unexpected NullPointerException Thrown from Methods After Code Optimization
• Issues Resolved in R28.3.1
  • FileNotFoundException Thrown while Opening Zip Archives
• Issues Resolved in R28.2.9
  • Heap Dumps Not Generated on Out Of Memory Error
  • Issue with the Out of Memory Error Message
• Issues Resolved in R28.2.8
  • NullPointerExceptions from Package.getPackages Calls
  • NullPointerExceptions from Class.isAssignable
  • JRockit Crashes while Code Optimization in cgGetColorForVarInBlock
• Issues Resolved in R28.2.6
  • JRockit Fight Recorder Repository Growing Indefinitely
  • Unexpected Errors from Applications with Dynamically-created Classes
  • JMXMAPI Profiling API Can Now Profile All Versions of a Class
• Issues Resolved in R28.2.5
  • JRockit Crashes when Interned Strings are Allocated
  • JRockit Crashes while Running with an optfile
  • FileNotFoundException Thrown while Reading Files from FileInputStream
  • Issue while Closing a NIO Socket
  • NIO Operations Fail on Windows with a Security Exception
  • Wrong Exception Thrown when Flight Recorder is Disabled
  • JRockit Crashes while Invoking a com.sun.management Method
• Issues Resolved in R28.2.4
  • Issue with the jrcmd Command File Parsing
  • Failure to Start on Solaris While Using a Large Page Size
  • Issue with print_memusage Diagnostic Command
• Issues Resolved in R28.2.3
  • Redirecting Ouput of the jrcmd Command to a Specified File
  • Issue with the Limited File Size for the jrcmd Script File
  • Issue while Reserving VMSpace
  • Improved Stack Overflow Handling
  • Issue while Optimizing a Method
  • Issue with JRockit after Removing JRockit Flight Recorder
• Issues Resolved in R28.2.2
  • Exceptions are Thrown while Establishing SSL Connections that use Cipher Suite
  • Issue with Code Optimization
  • Missing Finalizers
• Issues Resolved in R28.1.5
  • Unable to Reserve Memory in the Low Address Space of the Java Heap
  • Thread Starvation while Using the Default Number of Garbage Collection Threads in Multi-Core Machines
  • Error while Setting SUID or SGID on JRockit JVM
• Issues Resolved in R28.1.4
  • Warnings Print When Launching Java Involving Symbolic Links on Windows
  • Corrupt HPROF File
• Issues Resolved in R28.1.3
  • Deadlock Occurring in the ClassLoader (Sun Bug 7001933)
  • "Peer Not Authenticated" Exception Unexpectedly Thrown (Sun Bug 6924489)
  • Problem Setting SO_RCVBUF/SO_SNDBUF (Sun Bug 6984182)
  • Passing Read-Only Bytebuffer to Channel Write Method Throwing Exception
  • Specific JNI API Routines Did Not Correctly Set isCopy Parameter
  • Incorrectly Optimized Methods Forcing Long Values to Become Very Large
• Issues Resolved in R28.1.1
  • Crashes During Concurrent Sweep JNI Object Allocation
  • Silent Exit When Command-Line Options are Misspelled
  • Erroneous Optimization of an arraycopy
  • JDK Read Fixed Number of Bytes When Calling SecureRandom.generateSeed
  • instanceof Check Failing
• Issues Resolved in R28.1.0
  • Oracle JRockit Hangs when used with Application Management Solutions
  • Memory Leakage in the JMX Implementation
  • Oracle JRockit Exits when Aborting an Optimization
  • Oracle JRockit Heap Dumps Do Not Open in Eclipse Memory Analyzer
  • Exceptions Thrown Without InvocationTargetException Wrapping
• Issues Resolved in R28.0.2
  • Oracle JRockit Starts Slowly on Some Solaris Machines
  • IO Exceptions in Epoll Socket Muxer Would Throw NoClassDefFoundErrors
  • Oracle JRockit Crashing While Pruning References to Obsoleted Code
  • Oracle JRockit Could Not Open JAR or ZIP Files Larger Than 2GB
  • Xalan and Xerces Versions Updated
• Issues Resolved in R28.0.1
  • JVM Crashes on Encountering Non-UTF8 Characters in Compiler Directives
  • Null-Check Incorrectly Optimized or Proved as Always Failing
  • Linux Systems Crash at Startup when libjsig.so is Set to be Preloaded
  • NIO Selector Functionality Failure
  • Deprecated Flag -XXExternalCompactRatio Gives Incorrect Warning
  • ZipEntry Initialization Error
  • Crash in ZLIB Code While Running Finalizer
  • Undeterministic Behavior on x86_64 Machines
  • JVM Spins Forever When Compiling JavaFX Classes
  • Descriptions Not Intuitive for Compaction JFR Events
  • WLS NIOSocketMuxer Occasionally Loses Sockets On Windows
• Issues Resolved in R28.0.0
  • ACopyRemoval Breaks Explicit Typechecks
  • Deadlocks On the Windows Platform When Threads Block on I/O Operations
  • Issues with Nondefault Flag with -XXcallProfiling in Oracle JRockit R27.x
  • Performance Issues with Windows Computers Running Many Processes
  • Optimizing Compiler Producing Erroneous Results
  • Broken Java Launcher Removed from Product
  • JVMTI_EVENT_COMPILED_METHOD_UNLOAD Event Not Being Posted

4 Known Issues in Oracle JRockit JDK R28

• Issue with Object Initialization in JRockit
• Issues while Using 64-Bit Compressed References on SPARC
• Limited Amount of Active Monitors
• Error While Using print_utf8pool Command on Windows
• HPROF Heap Dump Might be Corrupt When Multiple OOMs Thrown
• java.math.BigDecimal Objects Cannot be Serialized Over IIOP Between Releases
• Timing Stability Issue When "Fast Time" Is Enabled on Intel Systems
• JMAPI Method Changed to Throw an UnapplicableMethodException
• Error Message for CPU Load Counters for JRockit JVM Running on Windows
• Oracle JRockit Hangs On OEL/OVM Combination
• Triggering Young Collections if the Nursery is Too Small
• SSE2 Registers Might Not be Restored Correctly After Return from Signal Handler
• System Crashing when Stack Expansion Uses Randomized Address Spaces
• Large Pages on Solaris Might Cause Long Pauses
• Calculation-Intensive Applications Returning Corrupt Register Values
• R28 Not Supported On Windows 2008 With More Than 64 Processors
• Out of Memory Error Occurs When Classblock Memory Runs Low
• IllegalArgumentException from TLS handshake