IBM SDK, Java Technology Edition, Version 7: Current news
Support Information for IBM® SDK, Java™ Technology Edition, Version 7 that is not available in the user documentation.
The documentation to support this release is available in the online product documentation . However, from service refresh 10 fix pack 25, only the security documentation is still maintained. Any updates or changes to other content are detailed in this technote.
Changes to the online content:
Supplementary information is available for the following updates:
- Service refresh 10 fix pack 40
- Service refresh 10 fix pack 20
- Service refresh 10 fix pack 10
- Service refresh 10 fix pack 1
- Service refresh 9 fix pack 10
- Service refresh 8 fix pack 10
- Service refresh 6 fix pack 1
- Service refresh 4 fix pack 2
- Service refresh 4 fix pack 1
- Service refresh 3
- Initial release of IBM SDK, Java Technology Edition, Version 7
To compare the IBM SDK functionality with Oracle build levels at each service refresh level, see Comparative Oracle build levels .
For information about security fixes, see Security Alerts .
For a list of the IBM fixes included, see IBM SDK, Java Technology Edition, Version 7 fixes .
To download the latest service refresh, visit the Java SDK developer center .
For information about the daylight saving time changes included in service refreshes and fix pack levels, see Olson time zone updates . Later updates can by applied using the IBM Time Zone Update Utility for Java (JTZU) .
Changes to online content:
Configuring large page memory allocation on z/OS systems
There are changes to the content in the topic Configuring large page memory allocation . 1M pageable large pages are supported only on IBM zEnterprise EC12® or later systems. The online documentation states that the Flash Express® feature (#0402) is required. However, it is actually not required but recommended, only to avoid demoting 1 MB pageable large pages to 4 K pages when paging is required during periods of high real memory usage. When the 1 MB pageable large pages are demoted to 4 K pages, they remain as 4 K pages until a future system IPL.
On z/OS 2.3 and later, 1M pageable large pages are available by default. You no longer need to set the PAGESCM=ALL option in the IEASYSxx parmlib member.
Service refresh 10 fix pack 40 (February 2019)
Changes to Korean codepoint mappings
In previous releases, if you used EUC-KR encoding to convert between EUC-KR codepoints and Unicode during string conversion, some Korean characters were not mapped to the expected Unicode values. This result is because the EUC-KR codepage was based on the IBM970 codepage. This behavior has been corrected in this release. The affected characters are as follows:
|EUC-KR mapping||Correct Unicode mapping||Character||Incorrect Unicode mapping||Character|
|0xA1A4||\u00B7||Middle dot||\u30FB||Katakana middle dot|
|0xA1AA||\u2015||Horizontal bar||\u2014||Em dash|
|0xA1AD||\u223C||Tilde operator||\u301C||Wave dash|
|0xA2A6||\uFF5E||Full-width tilde||\u02DC||Small tilde|
|0xA2C1||\u2299||Circled dot operator||\u25C9||Fisheye|
Note: java.nio.charset classes already used the correct mappings and are unaffected.
If you require the previous mappings, specify the -Dibm.useCp970=true system property on the command line when you run your application.
In addition, the following characters from the KS X 1001 standard have been added:
|EUC-KR mapping||Unicode mapping||Character|
|0xA2E8||\u327E||Korean postal code mark (circled hangul ieung u)|
Service refresh 10 fix pack 20 (Jan 2018)
Out of memory exceptions when running applications with compressed references enabled
The Oracle CPU for January contains an update for CVE-2018-2582 to fix vulnerabilities in the Hotspot virtual machine (VM) that might be exploited by Java web start applications and applets. Fixes are also applied for the OpenJ9 virtual machine. The fix increases the amount of low memory used for VMs that use compressed references. Customers who are running close to the maximum amount of allowed 32-bit memory might experience out of memory exceptions. A possible workaround is to use the -Xmcrs option to secure space in the lowest 4GB memory area for any native classes, monitors, and threads that are used by compressed references.
For more information about this option, see -Xmcrs .
Service refresh 10 fix pack 10 (October 2017)
Support for z/OS v2.3
This update includes support for z/OS v2.3.
Service refresh 10 fix pack 1 (February 2017)
Security vulnerability CVE-2016-2183
A further fix is added to mitigate against this vulnerability, which is described here . (APAR IV93288)
Service refresh 9 fix pack 10 (July 2015)
Partial fix for change in behavior for -Xshareclasses:destroyAll
In service refresh 8 fix pack 10 a behavior change was reported for this option on z/OS platforms. See Change in behavior for -Xshareclasses:destroyAll .
Following a fix for the 64-bit JVM, the problem remains only on the 31-bit JVM. When the destroyAll option is invoked from a 31-bit JVM, 64-bit caches are not destroyed. The following message is displayed:
JVMSHRC735I Use a 64-bit JVM to perform the requested operation on the 64-bit shared cache \"cachename\" as the 31-bit JVM cannot verify that the shared memory was created by the JVM
Service refresh 8 fix pack 10 (February 2015)
Change in behavior for -Xshareclasses:destroyAll
Due to a current issue on z/OS, when the destroyAll option is invoked from a 31-bit Java virtual machine (JVM), 64-bit caches are not removed. Similarly, when the destroyAll option is invoked from a 64-bit JVM, 31-bit caches are not removed. The following message is displayed:
JVMSHRC735I: Use a nn-bit JVM to perform the requested operation on the nn-bit shared cache \"cachename\" as the nn-bit JVM cannot verify that the shared memory was created by the JVM.
Service refresh 6 fix pack 1 (January 2014)
Default behaviour change when running unsigned or self-signed applets
Unsigned or self-signed applets no longer run by default because the security settings are changed to high. If you want to run unsigned or self-signed applets, you must change the security settings to medium. You can make this change in the Java Control Panel. Select the Security tab and move the slider to adjust the security level. This behavior change is not applicable to z/OS® or Linux on system Z platforms.
Service refresh 4 fix pack 2 (May 2013)
This fix pack includes a change to the default value for the RMI property java.rmi.server.useCodebaseOnly from false to true, which might cause unexpected errors for applications that use RMI. For more information, see http://docs.oracle.com/javase/7/docs/technotes/guides/rmi/enhancements-7.html .
On Windows, improvements are made to the way that Runtime.exec decodes command strings. However, applications specifying commands that contain spaces in the program name, or that use quotation marks incorrectly, might fail to start. For more information, including guidance on resolving problems, see http://www.oracle.com/technetwork/java/javase/7u21-relnotes-1932873.html#jaruntime .
Service refresh 4 fix pack 1 (April 2013)
Service refresh 3 (November 2012)
PKCS11 security provider
A new library is available that allows the IBMPKCS11Impl provider to run on the Linux AMD64 platform.
IBM SDK for Java Version 7 initial release (September 2011)
The SDK is functionally equivalent to the Oracle FCS version of Java 7 b147 for all distributions except Solaris, which is b148.
The z/OS® 31-bit and 64-bit SDKs are supported on z/OS 1.13.
Comparative Oracle build levels
The following table indicates the Oracle FCS build level that has comparative functionality to the IBM SDK:
|Release date||IBM SDK 7||Oracle Java 7 FCS build|
|September 2011||Initial release||Build 147|
|May 2012||Service Refresh 1||Update 3 Build 5|
|September 2012||Service Refresh 2||Update 3 Build 5|
|November 2012||Service Refresh 3||Update 6 Build 17|
|February 2013||Service Refresh 4||Update 13 Build 8|
|July 2013||Service Refresh 5||Update 25 Build 12|
|November 2013||Service Refresh 6||Update 45 Build 18|
|January 2014||Service Refresh 6 Fix Pack 1||Update 51 Build 11|
|April 2014||Service Refresh 7||Update 55 Build 13|
|July 2014||Service Refresh 7 Fix Pack 1||Update 65 Build 19|
|November 2014||Service Refresh 8||Update 71 Build 13|
|February 2015||Service Refresh 8 Fix Pack 10||Update 75 Build 13|
|May 2015||Service Refresh 9||Update 79 Build 14|
|July 2015||Service Refresh 9 Fix Pack 10||Update 85 Build 15|
|November 2015||Service Refresh 9 Fix Pack 20||Update 91 Build 15|
|January 2016||Service Refresh 9 Fix Pack 30||Update 95 Build 12|
|April 2016||Service Refresh 9 Fix Pack 40||Update 101 Build 14|
|July 2016||Service Refresh 9 Fix Pack 50||Update 111 Build 13|
|October 2016||Service Refresh 9 Fix Pack 60||Update 121 Build 15|
|February 2017||Service Refresh 10 Fix Pack 1||Update 131 Build 12|
|April 2017||Service Refresh 10 Fix Pack 5||Update 141 Build 11|
|July 2017||Service Refresh 10 Fix Pack 10||Update 151 Build 15|
|October 2017||Service Refresh 10 Fix Pack 15||Update 161 Build 13|
|January 2018||Service Refresh 10 Fix Pack 20||Update 171 Build 11|
|May 2018||Service Refresh 10 Fix Pack 25||Update 181 Build 09|
|August 2018||Service Refresh 10 Fix Pack 30||Update 191 Build 08|
|November 2018||Service Refresh 10 Fix Pack 35||
Update 201 Build 11
|March 2019||Service Refresh 10 Fix Pack 40||Update 211 Build 07|
More support for:
Runtimes for Java Technology
Component: Java SDK
Software version: 7.0
Operating system(s): AIX, HP-UX, Linux, Solaris, Windows, z/OS
Software edition: Java SE
Reference #: 1499721
Modified date: 04 March 2019