This document describes the Adabas Online System screens that apply to a cluster environment.
Estimating Sizes for the Cache Structure in a Cluster Environment
Estimating Sizes for the Lock Structure in a Cluster Environment
You can use the PF2 key (function key 2) on some cluster environment screens in Adabas Online System (AOS) to scroll through the nuclei in a cluster. This allows you to review the same sets of statistics for each of the nuclei in a cluster.
When you press PF2 on such an AOS screen (or enter the
NextNucid
command), the same screen appears, but
with data pertaining to the nucleus with the next highest nucleus ID in the
cluster. If there is no higher nucleus ID, AOS cycles back to the beginning and
displays the same screen, with data pertaining to the nucleus with the lowest
ID in the cluster.
The screens on which this functionality is provided are:
menu
Display Parameters screen
Modify Parameters screen
menu
Display User Queue screen
menu
Once the nucleus ID is incremented on any of these screens, it remains in use on all AOS screens until it is changed.
From the
menu, a new function Display cluster members (option A) produces the following screen:14:02:39 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 105 - Display Cluster Members - PACA002 Total number of nuclei in the cluster: 4 I Sel I Nuc ID I Image ID I Jobname I Status I Available Plex Services I ------------------------------------------------------------------------------ I _ I 1 I DAEMVS I ADANUC01 I Active I All I I _ I 2 I DAEMVS I ADANUC02 I Inactive I Lock I I _ I 3 I DDZMVS I ADANUC03 I Active I All I I _ I 4 I DDZMVS I ADANUC04 I Active I All I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Refresh Menu |
The screen includes a list of nuclei participating in the cluster and information about the current status of each nucleus.
To select a nucleus for additional processing
Type "S" in the Sel column opposite that nucleus.
To display additional information about a nucleus
Type "D" in the Sel column opposite that nucleus.
For an Adabas cluster nucleus that has a nonzero nucleus ID, its entry in the parallel participant table (PPT) is displayed in a screen similar to the following:
14:04:00 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Display PPT Entry - MACA012 NucID ... 1021 Active Nucleus, PLOG(s) not copied, CLOG(s) not copied Name Dataset Status DataSet Name ------ -------------------------- ---------------------------------------- WORK1 RD.USAXXX.DB1955.WORKR1 PLOGR1 RD.USAXXX.DB1955.PLOGR1 PLOGR2 RD.USAXXX.DB1955.PLOGR2 CLOGR1 RD.USAXXX.DB1955.CLOGR1 CLOGR2 RD.USAXXX.DB1955.CLOGR2 Press 'ENTER', PF3 or PF12 to continue PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Menu |
From the menu, the Nucleus file status (option N) can be used to determine the status of nucleus files. This is the equivalent of the DNFV operator command.
14:05:09 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Nucleus File Status - PACUN02 NucID 1021 Locking File NucID Access count Update count State ----- ----- ------------- ------------- ---------------------- 29 0 0 Access 39 0 0 Access 40 0 0 Access 41 0 0 Access 90 0 0 Update Last page PF1----- PF2----- PF3----- PF4----- PF7----- PF8----- PF9------- PF12----- Help Repos Exit Refresh - + Menu |
In an Adabas cluster environment, the file may be locked for exclusive use by another cluster nucleus. If this is the case and the file is in the nucleus file status table, the Locking NucID column for the file shows the ID of the nucleus that has exclusive control.
The Access count / Update count fields display the number of access or update users, respectively, that refer to the specified file in their user queue elements (UQEs). These users either have specified the file in an OP command with R-option or are using the file in an as yet incomplete transaction.
A State field indicates when the file is used for access only or for access and update. The State field indicates to what extent a nucleus can use a file on its own. If the requested use exceeds the given state, the nucleus must first communicate with the other nuclei in the cluster in order to upgrade the state.
From the Interval Utilization menu, a second screen , System status (option S), displays I/O counts for the ASSO, DATA, WORK, and PLOG data sets; remote and local call distribution; and other current session status information.
14:07:19 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - System Status - PACUS12 NucID: 1021 Physical Reads Writes Call Distribution ----------------------------- --------------------------------------- ASSO 7,529 280 No. of HQEs active ......... 0 DATA 4,946 90 No. of UQEs in User Queue .. 1 WORK 2 379 No. of CQEs waiting in CQ .. 0 PLOG 15 274 No. of PLOG switches ....... 0 CLOG 29 10 No. of CLOGs ............... 2 No. of PLOGs ............... 2 PLOG protection blks . 273 PLOG protection I/Os . 273 Format translations ..... 577 WORK1 protection blks. 379 Format overwrites ....... 0 WORK1 protection I/Os. 379 Auto-restarts ........... 13 Throw-backs for ISN ..... 0 Logical reads ........ 35,163 Throw-backs for Space.... 0 Buffer efficiency .... 2.8 page 1 of 3 PF1---- PF2---- PF3----- PF4----- PF6----- PF7----- PF8----- PF9----- PF12---- Help Exit Refresh + FullView Menu |
Pressing PF8 displays another screen of system status information.
14:07:19 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - System Status - PACUS12 NucID: 1021 Call Distribution Commands ------------------------------------ ----------------------------- User sessions ........ 67 Remote ........ 0 Buffer flushes ....... 91 Local ......... 8,573 Flush phases ......... 91 Internal ...... 6,122 Blocks flushed ....... 360 Operator ...... 0 Flush I/Os ........... 360 Total ......... 14,695 Flush Requests Returned Time Elapsed ------------------------------------ ---------------------------------- Immediately .......... 1 Duration .... 3 days, 17:33:36 After logical flush .. 0 Wait-time ... 3 days, 17:33:25 After entire flush ... 98 CPU time .... 0 day, 00:00:39 page 2 of 3 PF1---- PF2---- PF3----- PF4----- PF6----- PF7----- PF8----- PF9----- PF12---- Help Exit Refresh - + FullView Menu |
Pressing PF8 again displays an additional screen that indicates if one or more of the following are in progress:
Online database save running;
ADAEND in progress;
Online file save running;
READONLY/UTIONLY transition;
READONLY status;
Update processing suspended;
ET-sync in progress;
UTIONLY status; and
Exclusive-DB-control utility running.
Otherwise, "Adabas operation normal" is displayed.
14:07:19 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - System Status - PACUS12 NucID: 1021 Nucleus Status Flags ------------------------------------ Adabas operation normal page 3 of 3 PF1---- PF2---- PF3----- PF4----- PF6----- PF7----- PF8----- PF9----- PF12---- Help Exit Refresh - FullView Menu |
From the Session Monitoring menu, Cluster usage (option X) displays nucleus cluster statistics that are equivalent of those displayed using the DXCACHE, DXLOCK, and DXFILE operator commands.
The equivalent direct command is:
DISPLAY CLUSTERSTATUS
14:09:48 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 - Cluster Usage - PACUX02 Code Service ---- ---------------- C Cache statistics F File statistics L Lock statistics ? Help . Exit ---- ---------------- Code ......... _ File Number .. 29 Database ID .. 1955 (WIS1955) NucID .. 1021 Command ==> PF1----- PF2----- PF3------ PF4------ PF6----- PF9----- PF10----- PF12----- Help Exit Fuse Flist Menu |
This section covers the following topics:
Choosing cache statistics (option C) from the Cluster Usage menu displays the following menu:
14:10:10 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 - Cache Statistics - PACUX12 Code Service ---- ----------------------- K Cast-out / Directory P Publishing requests X Individual cache blocks . Exit ? Help ---- ----------------------- Code ......... _ Database ID .. 1955 (WIS1955) NucID .. 1021 PF1----- PF2----- PF3----- PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Refresh Menu |
The rest of this section describes each of the options on this screen.
Choosing cast-out / directory (option K) from the Cache Statistics menu display the following:
14:10:10 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Cast-out / Directory - PACUX12 NucID 1021 Cast-out Directory Reads Directory Reads --------------------------- --------------------------- Total ....... 182 Total ....... 10 Sync ..... 107 Sync ..... 0 Async .... 75 Async .... 10 Unlock Cast-out Calls --------------------------- Total ....... 91 Sync ..... 0 Async .... 91 PF1----- PF2----- PF3----- PF4----- PF7----- PF8----- PF9------- PF12----- Help Exit Refresh Detail Menu |
Counters have a multiplier column with the following values:
Value | The total shown is in . . . |
---|---|
blank | (factor of 1) |
K | kilo (factor of 1,000) |
M | mega (factor of 1,000,000) |
G | giga (factor of 1,000,000,000) |
If a number has a multiplier shown, it has been divided by the multiplier, showing the significant digits to 9 places with no decimal point.
Press PF9 to see the entire value. This value is the exact count up to 20 digits in length.
Choosing publishing requests (option P) from the Cache Statistics menu display the following:
14:11:14 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Publishing Requests - PACUX12 NucID 1021 Publishing Request Category --------------------------------- Update sync ....... 91 BT or CL or ET .... 3 Redo threshold .... 0 Full bufferpool ... 0 All blocks ........ 97 Specific RABN ..... 0 File DS blocks .... 0 All DSST blocks ... 90 File NI blocks .... 0 PF1----- PF2----- PF3----- PF4----- PF7----- PF8----- PF9------- PF12----- Help Exit Refresh Detail Menu |
Choosing all cache blocks (option X) from the Cache Statistics menu display the following:
14:11:54 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - All Cache Blocks - PACUX12 NucID 1021 Reads Writes -------------------------------- ---------------------------------- Total ............ 7,460 Total .............. 373 Sync .......... 1,241 Sync ............ 179 Async ......... 6,219 Async ........... 194 In cache ...... 105 Written ......... 373 Not in cache .. 7,355 Not written ..... 0 Struc. full ... 0 Struc. full ..... 0 Cast-out Reads Other -------------------------------- ---------------------------------- Total ............ 360 Validates .......... 44,877 Sync .......... 360 Invalid ......... 0 Async ......... 0 Deletes ............ 0 Timeouts ........ 0 Redo processes ..... 0 PF1----- PF2----- PF3----- PF4----- PF7----- PF8----- PF9------- PF12----- Help Repos Exit Refresh PrevBlk NxtBlk Detail Menu |
Use PF7 and PF8 to scroll through the cache blocks; use PF2 to reposition.
Statistics are displayed for the following:
All cache blocks
Address converter (AC ) cache blocks
Data Storage (DS) cache blocks
Data Storage space table (DSST) cache blocks
File control block (FCB) cache blocks
Normal index (NI) cache blocks
Upper index (UI) cache blocks
Press PF9 from the above screen to display the following detail screen:
14:11:54 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - All Cache Blocks - PACUX12 NucID 1021 Reads Writes -------------------------------------- --------------------------------------- Total ...... 7,460 Total ....... 373 Sync ..... 1,241 Sync ...... 179 Async .... 6,219 Async ..... 194 In cache.. 105 Written ... 373 Not in ... 7,355 Not writ .. 0 Stru.full. 0 Stru.full . 0 Cast-out Reads Other -------------------------------------- --------------------------------------- Total ...... 360 Validates ... 44,877 Sync ..... 360 Invalid ... 0 Async .... 0 Deletes ..... 0 Timeouts .. 0 Redo procs .. 0 Press Enter to continue |
Choosing file statistics (option F) from the Cluster Usage menu for file 25 displays the following menu:
14:12:42 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - File 29 Statistics - PACUX22 NucID 1021 Reads Writes -------------------------------- ---------------------------------- Total ............ 5 Total .............. 0 Sync .......... 0 Sync ............ 0 Async ......... 5 Async ........... 0 In cache ...... 0 Written ......... 0 Not in cache .. 5 Not written ..... 0 Struc. full ... 0 Struc. full ..... 0 Cast-out Reads Other -------------------------------- ---------------------------------- Total ............ 0 Validates .......... 12 Sync .......... 0 Invalid ......... 0 Async ......... 0 Deletes ............ 0 Timeouts ........ 0 Redo processes ..... 0 PF1----- PF2----- PF3----- PF4----- PF7----- PF8----- PF9------- PF12----- Help Repos Exit Refresh Detail Menu |
Choosing lock statistics (option L) from the Cluster Usage menu displays the following menu:
14:13:03 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 - Lock Statistics - PACUX39 Code Service Code Service Code Service ---- ------------------ ---- ------------------ ---- ------------------ A Buffer flush L Global ET sync W Replicat handshake B Cancel M Glbl upd cmd sync X Security C Checkpoint N Hold ISN Y Spats D Container O LOB tracker Z Unique descriptor E Delta Save (DSF) P Net-wrk DBID asgmt 1 User F Distributed tranID Q New-Data-RABN 2 Wkpt4 RABN index G ETID R Online save 3 Wkpt4 PET user tbl H File-lock-table S Parameter . Exit I Format-addr-conver T Record read ? Help J Free space table U Recovery (online) K GCB V Recovery log(RLOG) ---- ------------------ ---- ------------------ ---- ------------------ Code ......... _ Database ID .. 1955 (WIS1955) NucID .. 1021 PF1----- PF2----- PF3------ PF4------ PF6----- PF7------ PF8----- PF12----- Help Exit Refresh Menu Û 19,031 |
Each of the options on the Lock Statistics menu displays statistics for a particular lock. For each lock, the screen displays obtain and release information about the various types of that lock that are currently in use by a cluster nucleus:
The system may obtain locks conditionally or unconditionally, synchronously or asynchronously. A conditional request for a lock may be granted or rejected.
Releases may be performed synchronously or asynchronously.
Choosing hold ISN lock (option J) from the Lock Statistics menu displays the following:
14:13:03 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Hold ISN Lock - PACUX39 NucID 1021 Obtains Alters ------------------------------ ------------------------------------ Conditional .... 91 Conditional .......... 0 Granted ..... 91 Granted ............ 0 Rejected .... 0 Rejected ........... 0 Unconditional .. 0 Unconditional ........ 0 Rejected-deadlock .. 0 Sync ........... 3 Async .......... 88 Sync ................. 0 Async ................ 0 Releases ------------------------------ Issued ......... 91 Sync ........ 8 Async ....... 83 PF1----- PF2----- PF3------ PF4------ PF6----- PF7------ PF8----- PF12----- Help Repos Exit Refresh PrevLok NxtLok Menu |
Use PF7 and PF8 to scroll through the locks; use PF2 to reposition.
These instructions describe how to use the structure size calculator to estimate the size for the cache structure in a cluster environment. The cache structure should be made large enough to provide sufficient space for:
Tracking all blocks kept in the buffer pools of all connected cluster nuclei (directory elements) and
Keeping all changed blocks until they are written to the database (data elements).
The assignment of total cache space into directory and data elements is done via the DIRRATIO and ELEMENTRATIO ADARUN parameters.
The actual cache structure size value is dependent on coupling facility internals and may vary across different coupling facility levels. If the estimates by this structure size calculator are too far off the real allocations reported by cluster nuclei, you can tweak the directory element size value to bring the calculator more in line with the actual coupling facility being used.
To access and use the space calculator for the cache structure in a cluster environment
Select option
on the in AOS.The
menu appears.14:15:27 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 - Space Calculation - PSP0002 Code Service ---- ------------------ A ASSO C Cluster-Cache/Lock D DATA F DDFILEA S SORT T TEMP W WORK ? Help . Exit ---- ------------------ Code .......... _ Database ID ... 1955 (WIS1955) Command ==> PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Menu |
Select option
on the menu.The Cache Structure Calculator panel appears.
14:17:34 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Cache Structure Calculator - PSPC002 Smallest block size in DB ....... 2544 Largest block size in DB ........ 5724 Buffer pool size (LBP) .......... 80896_______ Size proper for caching blocks .. 100000______ Max nuclei in cluster ........... 3 Directory element size .......... 400 Cache structure size (in KB) .... _________ For minimum calculation, leave cache structure size field empty. Modify values, press Enter to provide estimates below. Cache CFRM SIZE/INITSIZE ........ 2650 ( 2.5 MB) ADARUN DIRRATIO ................. 67 ADARUN ELEMENTRATIO ............. 48 Cache directory elements ........ 135 Cache data elements ............. 97 Cache data element size ......... 1024 PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Lock Menu |
Specify values for the following fields on the Cache Structure Calculator panel.
Field | Description | Default |
---|---|---|
Smallest block size | Specify a value between 1024 and 32768 bytes. | The smallest block size of the current Adabas Online System database ID. |
Largest block size | Specify a value between 1024 and 32768 bytes. If the value of the Smallest block size field exceeds this value, then the Smallest block size value is swapped in. | The largest block size of the current Adabas Online System database ID. |
Buffer pool size | Specify a value between 80,000 and 999,999,999,999 bytes. | The value of the LBP parameter setting for the current Adabas Online System database ID. |
Size proper for caching blocks | Specify a value between 100000 - 999,999,999,999 bytes. | The LBP parameter of the current Adabas Online System database ID, rounded down to nearest 100000. "Size proper" means that this does not include the overhead in the cache structure required for administering these blocks. Thus, this value specifies how much space should be available in the cache structure for keeping changed blocks between buffer flushes and for buffering blocks so that the cluster nuclei do not have to read them from the database. |
Max Nuclei in cluster | Specify a value between 2 and 32. | 3 |
Directory element size | Specify a value between 100 and 999 bytes. This value specifies how much space (including the overhead for the access paths) will be used in the cache structure by each directory element. | 400 |
Cache Structure size | Specify a blank for the minimum calculation or specify a value between 100 and 999,999,999 (KB). Although this value is given as an output field, you may want to propose a cache structure size, to see how to allocate the cache space (directory and data elements). | blank |
Press Enter after all values in the previous step are specified.
The following output fields on the screen are filled.
Field | Description |
---|---|
Cache CFRM SIZE/INITSIZE | The recommended cache structure SIZE or INITSIZE specification in the coupling facility resource management policy. |
ADARUN DIRRATIO | The recommended ADARUN DIRRATIO parameter settings for the cluster nuclei. |
ADARUN ELEMENTRATIO | The recommended ADARUN ELEMENTRATIO parameter settings for the cluster nuclei. |
Cache directory | The estimated directory and data element counts resulting from the SIZE/INITSIZE and DIRRATIO settings. |
Cache data elements | The estimated directory and data element counts resulting from the SIZE/INITSIZE and ELEMENTRATIO settings. |
Cache data element size | This (accurate) value depends only on the largest Asso/Data/Work block size in the database. |
These instructions describe how to use the structure size calculator to estimate the size for the lock structure in a cluster environment. The lock structure should be made large enough to provide sufficient space for:
Keeping the lock record elements for all locks held at the same time, and
Avoiding too much false contention between locks on different resources.
The number of lock table entries and record elements are shown in the results for comparison with the related cluster nucleus message (ADAX70) and to aid your own calculations.
The actual lock structure size value is dependent on coupling facility internals and may vary across different coupling facility levels. If the estimates by this structure size calculator are too far off the real allocations reported by cluster nuclei, you can tweak the lock record element size value to bring the calculator more in line with the actual coupling facility being used.
To access and use the space calculator for the lock structure in a cluster environment
Select option
on the in AOS.The
menu appears.Select option
on the menu.The Cache Structure Calculator panel appears.
14:17:34 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Cache Structure Calculator - PSPC002 Smallest block size in DB ....... 2544 Largest block size in DB ........ 5724 Buffer pool size (LBP) .......... 80896_______ Size proper for caching blocks .. 100000______ Max nuclei in cluster ........... 3 Directory element size .......... 400 Cache structure size (in KB) .... _________ For minimum calculation, leave cache structure size field empty. Modify values, press Enter to provide estimates below. Cache CFRM SIZE/INITSIZE ........ 2650 ( 2.5 MB) ADARUN DIRRATIO ................. 67 ADARUN ELEMENTRATIO ............. 48 Cache directory elements ........ 135 Cache data elements ............. 97 Cache data element size ......... 1024 PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Lock Menu |
Press PF4 to access the Lock Structure Calculator panel:
14:16:57 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 DBID 1955 - Lock Structure Calculator - PSPL002 Max files in database (MAXFILES) ...... 1000 Max number of parallel users (NU) ..... 200_____ Number of hold queue elements (NH) .... 800 Number of threads (NT) ................ 25 Unique descriptor pool size (LDEUQP) .. 50000 Lock record element size .............. 260 Lock structure size (in KB) ........... For minimum calculation, leave lock structure size field empty. Modify values, press Enter to provide estimates below. Lock CFRM SIZE/INITSIZE ............... 1478786 ( 1444.1 MB) Number of lock table entries .......... 16777216 Number of lock record elements ........ 5305996 Required min .. 5240000 PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Cache Menu |
Specify values for the following fields on the Lock Structure Calculator panel.
Field | Description | Default |
---|---|---|
Max files in database | Specify a value between 3 and 5000. This is the same as the MAXFILES parameter of the ADADEF and ADAORD utilities. | The MAXFILES parameter setting of the current AOS database ID. |
Max number of parallel users | Specify a value between 20 and 16,777,215. | The NU parameter setting of the current AOS database ID. |
Number of hold queue elements | Specify a value between 20 and 16,777.215. . | The NH parameter setting of the current AOS database ID. |
Unique descriptor pool size | Specify a value between 1 and 999,999,999. | The LDEUQP parameter setting of the current AOS database ID. |
Lock record element size | Specify a value between 100 and 999. This parameter specifies how much space (including the overhead for the access paths) will be used by each lock record element in the lock structure. | 260 |
Lock structure size | Specify a blank for the minimum calculation or specify a value between 100 and 999,999,999 (KB). Although this value is given as an output field, you may want to propose a lock structure size, to see how to allocate the lock table entries and lock table elements. | blank |
Press Enter after all values in the previous step are specified.
The following output fields on the screen are filled.
Field | Description |
---|---|
Lock CFRM SIZE/INITSIZE | The recommended lock structure SIZE or INITSIZE specification in the coupling facility resource management policy. |
Number of lock table entries | The calculated count of lock table entries resulting from the SIZE/INITSIZE setting. |
Number of lock record elements | The estimated count of lock record elements resulting from the SIZE/INITSIZE setting. You must actually start a cluster nucleus with the specified parameters to see how many lock record elements it gets from the lock structure. The number on the right side is the minimum number of lock record elements required to be available by the starting cluster nuclei. |
Note:
This option is available in Adabas nucleus cluster environments
only.
A new function has been added to the
menu to support the CLUFREEUSER command. When option V (User Table Maintenance) is selected, the following screen is displayed:15:10:47 ***** A D A B A S BASIC SERVICES ***** 2014-05-02 - User Table Maintenance - PACIV02 Code Service ---- ------------------------- C Begin CLUFREEUSER process ? Help . Exit ---- ------------------------- Code ......... _ TNA .......... 0______ UID .......... ___________________ Force ........ _ Global ....... _ Database ID .. 1955 (WIS1955) NucID .. 1021 Command ==> PF1----- PF2------ PF3------ PF4------ PF6----- PF7----- PF8----- PF12----- Help Exit Menu |
The CLUFREEUSER command is only valid in cluster environments. It can be issued against the local nucleus only or, with the Global option, against all active and inactive nuclei in the cluster.
The command is used to delete leftover user table elements (UTEs) in common storage that are no longer associated with user queue elements (UQEs) in a nucleus where
TNA | is a decimal number specifying the timeout value in seconds. UTEs that are not used during the time specified may be deleted if other conditions are fulfilled. If TNA is not specified, UTEs may be deleted without regard to their recent use. | |
UID | is a character string or hexadecimal byte string as follows: | |
cccccccc | where the argument is 1-8 letters, digits, or embedded '-' signs without surrounding apostrophes. | |
'cccccccc' | where the argument is 1-8 characters with surrounding apostrophes. | |
X'xxxxxxxxxxxxxxxx' | where the argument is an even number of 2-16 hexadecimal digits enclosed by X' '. | |
A character string must be enclosed
in apostrophes if it contains characters other than letter, digits, or embedded
'-' signs. If a specified character string is less than 8 characters long, it
is implicitly padded with blanks. If a specified hexadecimal string is shorter
than 16 hexadecimal digits, it is implicitly padded with binary zeros. If the last 8 bytes of a user's 28-byte communication ID match a specific user ID or user ID prefix, that user's UTE may be deleted if other conditions are fulfilled. If UID not specified, UTEs may be deleted regardless of their user IDs. |
||
FORCE | Delete leftover UTEs even if the users are due a response code 9 (ADARSP009), subcode 20. If FORCE is not specified, such UTEs are not deleted. Before using the FORCE parameter, ensure that the users owning the UTEs to be deleted will not expect any of their transactions to remain open. Specify FORCE on this screen by marking the Force field with any character. | |
GLOBAL | Delete leftover UTEs throughout the Adabas cluster if they are no longer associated with UQEs and are eligible according to the other specified parameters. Additionally and subject to the other rules, delete leftover UTEs if their assigned nuclei have terminated since their last use. If GLOBAL is not specified, only UTEs assigned to the local nucleus and used since the nucleus start are eligible for deletion. Specify GLOBAL on this screen by marking the Global field with any character. |