What's new for V5R4

 

For V5R4, there are a number of improvements and additions to journal management.

 

Default for SMAPP is set to 50 minutes from 60 minutes

• How SMAPP works

SMAPP and Journal support for additional access paths

SMAPP and access path journaling is now provided for encoded vector indexes and for most access paths with international components for unicode (ICU) sort sequence tables.

• Journal entry information finder

 

Easier ability to change the journal receiver threshold value

The CHGJRN command can now be used to modify the journal receiver threshold value.

• Managing journals

• Swapping journal receivers

 

Increased journal object limit

The maximum number of objects that can be associated with one journal is now either 250 000 or 10 000 000.

• Journal object limit

 

Enhanced support to allow users to automatically start journaling

Extension of the QDFTJRN support to allow a user to indicate that data areas and data queues created, moved, or restored into the library should automatically start journaling.

• Automatically starting Journaling

 

New default value of *SYSDFT is provided on the Receiver Size Options (RCVSIZOPT) parameter for the Create Journal (CRTJRN) command

The new receiver size option value *SYSDFT will be the default value on the CRTJRN command and will be an optional value on the CHGJRN command.

• Receiver size options for journals

 

Viewable entry-specific data for minimized journal entries

A new value for the MINENTDTA parameter, *FLDBDY, allows minimizing file entries on a field boundary. Along with this new minimizing value is a new parameter that can be specified when reading journal entries, Format minimized data (FMTMINDTA). This parameter allows you to specify whether entry specific data which has been minimized on field boundaries will be returned in a readable format.

• Minimized entry-specific data for journal entries

• Swapping journal receivers

 

Customization of recovery count for individual journals

A new parameter Journal Recovery Count (JRNRCYCNT) added to the Change Journal (CHGJRN) command indicates how many journal entries can exist between the last deposited entry and the oldest forced entry for a journal.

• Customization of the journal recovery count

• The Change journal (CHGJRN) command

 

Additional object selection capabilities when reading journal entries

Support has been enhanced for the commands DSPJRN, RCVJRNE, and RTVJRNE and the QjoRetrieveJournalEntries API. These commands have previously been able to selectively return journal entries related to a specific database file or set of database files but have now been extended to include selection capabilities for all objects types eligible for journaling.

• Working with journal entry information

 

Support for forward recovery for journaled data queues

Forward recovery support has been added for journaled data queues using save/restore and APYJRNCHG commands.

• Recovery of journaled objects

 

Enhancements to the Work with Journals (WRKJRN) command

The enhanced Work with Journals (WRKJRN) command support now includes all object types.

• Displaying information for journaled objects, journals, and receivers

• Recovering a damaged journal

• Recovery of journaled objects

• Applying journaled changes with the WRKJRN command

• Removing journaled changes with the WRKJRN command

 

Remote Journal Error Handling Enhancements

The i5/OS™ operating system provides timely and detailed messages in the event of a Remote Journal failure. If the source system cannot communicate with the target system, the source system will be notified immediately, end the remote journal environment, and provide detailed messages as to the possible cause. Similarly, if the target system cannot communicate with the source system, the target system will be notified immediately, end the remote journal environment, and provide detailed messages as to the possible cause.

• Working with remote journal error messages

 

Information enhancements

The journal entry information finder includes entry-specific data for journal code B integrated file system entries, code E data area operation, code Q data queue operation, and many other journal codes. It also includes documentation for new journal entries added with this release.

• Actions of applying or removing journaled changes by journal code

• Journal entry information finder

 

What's new as of December 2006

Automatically starting journaling

An *RSTOVRJRN keyword was added to override the journal used at save time. After you specify the *RSTOVRJRN keyword in the QDFTJRN data area, the operating system always records the restore operation to the journal that is specified in the QDFTJRN data area.

Layouts for variable-length portion of journal entries

An update was made for the variable width portion of the data area (E EE) journal entry. Another update was made for the variable width portion of the data queue (Q QA) journal entry.

 

How to see what's new or changed

To help you see where technical changes have been made, this information uses:

• The image to mark where new or changed information begins.

• The image to mark where new or changed information ends.

To find other information about what's new or changed this release, see the Memo to users.

 

Parent topic:

Journal management