What’s in Command Levels 90x

IBM MQ released Long Term Support release V9.0.0 back in June 2016 which had a Command Level of 900. The subsequent Continuous Delivery releases, V9.0.1, V9.0.2, V9.0.3, V9.0.4 and V9.0.5 have each introduced their own Command Levels, 901, 902, 903, 904 and 905 respectively.

This post captures the changes that are available in each of those Command Levels.

Release	Command Level	Features protected by Command Level – details below
	900	AMS Protection Policy enhancement – Confidentiality Policy LDAP Authorization on Windows
	901	No changes protected by Command Level
	902	Log management features
	903	No changes protected by Command Level
	904	Advanced Capability attribute on the queue manager object (z/OS only)
	905	Advanced Capability attribute on the queue manager object (Distributed platforms)

AMS Protection Policy enhancement – Confidentiality Policy

With the introduction of Confidentiality Policies in Command Level 900, there is a new attribute on the Set Policy command. A confidentiality policy has no signature algorithm, but does have a encryption algorithm. The Key Reuse feature is applicable to this type of policy. Jon Rumsey has a great write-up of this IBM MQ V9 feature on the MQDev blog, MQ V9 Fast encrypted messages with MQ – Introducing AMS Confidentiality Policies.

AMS Policy

New Attribute	MQSC name See SET POLICY Look for	PCF constant and values See Set Policy Look for
Key Reuse	KEYREUSE DISABLED UNLIMITED 1 – 9999999	MQIA_KEY_REUSE_COUNT (267) MQKEY_REUSE_DISABLED (0) MQKEY_REUSE_UNLIMITED (-1) 1 – 9999999

LDAP Authorization on Windows

Introduced in Command Level 801 on Unix, this feature extended the V8.0.0 Connection Authentication feature which checked your user ID and password, to allow LDAP authorization as well. The fields now available on Windows are the same as those noted in the earlier post for Command Level 801, and are not repeated here.

Log management

With the introduction of Automatic management of linear log extents, and Automatic writing of media images, in Command Level 902, there are new attributes on the queue manager object, queue manager status, and one on queue objects. Mark Whitlock has written about this in an MQDev Blog Post: Logger enhancements for MQ v9.0.2 and v9.1.

Queue Manager Object

New Attribute	MQSC name See ALTER QMGR Look for	PCF constant and values See Change Queue Manager Look for
Image Schedule	IMGSCHED AUTO MANUAL	MQIA_MEDIA_IMAGE_SCHEDULING (268) MQMEDIMGSCHED_AUTO (1) MQMEDIMGSCHED_MANUAL (0)
Image Interval	IMGINTVL 1 – 999 999 999 OFF	MQIA_MEDIA_IMAGE_INTERVAL (269) 1 – 999 999 999 MQMEDIMGINTVL_OFF (0)
Image Log Length	IMGLOGLN 1 – 999 999 999 OFF	MQIA_MEDIA_IMAGE_LOG_LENGTH (270) 1 – 999 999 999 MQMEDIMGLOGLN_OFF (0)
Image Recover Object	IMGRCOVO NO YES	MQIA_MEDIA_IMAGE_RECOVER_OBJ (271) MQIMGRCOV_NO (0) MQIMGRCOV_YES (1)
Image Recover Queue	IMGRCOVQ NO YES	MQIA_MEDIA_IMAGE_RECOVER_Q (272) MQIMGRCOV_NO (0) MQIMGRCOV_YES (1)

Queue Manager Status

New Attribute	MQSC name See DISPLAY QMSTATUS Look for	PCF constant and values See Inquire Queue Manager Status Look for
Archive Log Extent Name	ARCHLOG	MQCACF_ARCHIVE_LOG_EXTENT_NAME (3208) String of length MQ_LOG_EXTENT_NAME_LENGTH (24)
Archive Log Size	ARCHSZ	MQIACF_ARCHIVE_LOG_SIZE (1416)
Media Log Size	MEDIASZ	MQIACF_MEDIA_LOG_SIZE (1417)
Restart Log Size	RECSZ	MQIACF_RESTART_LOG_SIZE (1418)
Reusable Log Size	REUSESZ	MQIACF_REUSABLE_LOG_SIZE (1419)
Archive Log In Use	LOGINUSE	MQIACF_LOG_IN_USE (1420)
Archive Log Utilization	LOGUTIL	MQIACF_LOG_UTILIZATION (1421)

Reset QMgr command

Updated attribute	MQSC name See RESET QMGR Look for	PCF constant and values See Reset Queue Manager Look for
Action	TYPE REDUCELOG ARCHLOG	MQIACF_ACTION (1086) MQACT_REDUCE_LOG (10) MQACT_ARCHIVE_LOG (11)
Archived Log	ARCHIVED	MQCACF_ARCHIVE_LOG_EXTENT_NAME (3208) String of length MQ_LOG_EXTENT_NAME_LENGTH (24)
Log Reduction	REDUCE AUTO ONE MAX	MQIACF_LOG_REDUCTION (1422) MQLR_AUTO (-1) MQLR_ONE (1) MQLR_MAX (-2)

Queue Local and Queue Model

New Attribute	MQSC name See DEFINE queues Look for	PCF constant and values See Change, Copy, and Create Queue Look for
Image Recover Queue	IMGRCOVQ NO YES QMGR	MQIA_MEDIA_IMAGE_RECOVER_Q (272) MQIMGRCOV_NO (0) MQIMGRCOV_YES (1) MQIMGRCOV_AS_Q_MGR (2)

Advanced Capability

To allow monitoring tools to discover whether advanced capabilities are available on this queue manager, an attribute has been added to the display of the queue manager object.

• On z/OS, entitlement for:
  • IBM MQ Advanced for z/OS, Value Unit Edition (VUE)
• On Distributed, entitlement for:
  • Managed File Transfer
  • XR
  • Advanced Message Security
  • RDQM

Queue Manager Object

New Attribute	MQSC name See DISPLAY QMGR Look for and	PCF constant and values See Inquire Queue Manager Look for
Advanced Capability	ADVCAP DISABLED ENABLED	MQIA_ADVANCED_CAPABILITY (273) MQCAP_NOT_SUPPORTED (0) MQCAP_SUPPORTED (1)

You can get the equivalent information for earlier Command Levels from these posts.

• What’s in Command Levels 801 and 802
• New objects and new attributes for objects in WebSphere MQ 7.1, 7.5 and 8.0
• New WebSphere MQ 7.1, 7.5 and 8.0 attributes in DISPLAY QMGR for new or migrated queue managers

You can get the equivalent information for later Command Levels from these posts.

• What’s in Command Levels 91x
• What’s in Command Levels 92x