Data Base Operations report

The Data Base Operations report shows, for each type of database (VSAM, BDAM, and local DL/I), the number and type of I/O operations for each file accessed during the session.

FILE NAME

The name of the file. For VSAM and BDAM files for CICS V3.3 and greater, files that are remote are designated on the report with -R next to the file name. Remote files are not shown on the Data Set Characteristics report because they reside in a different address space than the one Strobe is measuring.

INPUT OPERATIONS

The number of get, update, browse, and total input operations for the file. For local DL/I files, this report shows the number of get unique, get next, get hold unique, get hold next, get hold next within parent (HOLD N.P.), and total input operations for the file. (For releases of CICS Transaction Server 1.3 and later, the browse column will show the sum of browse and browse-with-update operations.)

OUTPUT OPERATIONS

The number of add, update, delete, and total output operations for the file. For local DL/I files, the number of insert, replace, delete, and total output operations for the file.

TOTAL INPUT AND OUTPUT

The total of both I/O operations for the file.

STRING WAITS

For VSAM files only: the total number of I/O operations that waited for a string and the maximum number of operations that were waiting simultaneously.

BUFFER WAITS

For VSAM files only: the total number of I/O operations that waited for a buffer and the maximum number of operations that were waiting simultaneously.

Number of Output Operations to Transient Data Queues

The Number of Output Operations to Transient Data Queues report shows the number and type of output operations for every transient data queue to which a record was written during the measurement session.

DESTINATION

The identifier of the transient data queue.

INTRAPARTITION

The number of output operations to an intrapartition data set.

EXTRAPARTITION

The number of I/O operations to an extrapartition data set.

INDIRECT

The number of I/O operations to an indirect destination.

AUTO XACTN

The number of output operations initiated through automatic transaction initiation.

REMOTE

The number of I/O operations to a remote destination via the intersystem communication facility.

TOTAL

The total number of I/O operations for the queue.

Configuration Parameters and System-Wide Statistics Report

The Configuration Parameters and System-Wide Statistics report (Configuration Parameters and System-Wide Statistics Reports and Configuration Parameters and System-Wide Statistics Reports (Continued)) comprises seven reports that show certain counts that apply to the entire CICS region and the values of several important CICS parameters that affect performance of the region.

In the case of the observed maximum values shown in the following reports, the values are those observed since the last time the values were reset (at expiration of a statistics-gathering interval, at CICS initialization, or when a user has invoked a CICS-supplied transaction such as CSTT or CEMT PERFORM STATISTICS to reset the statistics counters). When a maximum value was reached before the measurement session, the associated value of the number of times at maximum is zero.

Configuration Parameters and System-Wide Statistics Reports

Task Statistics

The Task Statistics report shows the number and types of tasks that CICS created to service the region.

ALL TASKS: MAXIMUM NUMBER ALLOWED (MXT)

The maximum number of tasks that may exist concurrently. This number is the value of the parameter MXT in the System Initialization Table. If this value is dynamically changed by a CICS transaction or other means during a Strobe measurement session, the field will show that value rather than the value set in the System Initialization Table.

ALL TASKS: MAXIMUM NUMBER OBSERVED

The maximum number of tasks that Strobe observed.

ALL TASKS: TIMES AT MAXIMUM

The number of times that CICS was called upon to create a task and either:

• Set the task counter equal to the maximum number of tasks allowed (MXT), or
• Found that the maximum number of tasks had already been reached.

ACTIVE TASKS: MAXIMUM NUMBER ALLOWED (AMXT)

The maximum number of tasks allowed to be active concurrently. This number is the value of the parameter AMXT of the System Initialization Table.

ACTIVE TASKS: MAXIMUM NUMBER OBSERVED

The maximum number of tasks that were observed to be active at any one time.

Classed Tasks Statistics

The Classed Tasks Statistics report shows the number, names, and types of classed tasks that CICS created. Classed tasks are those created for transactions with Transaction Control Table definitions specifying a value for the parameter TCLASS. This report appears only if CICS created one or more classed tasks during the measurement session.

CLASS

The class number or the class name for the CICS Transaction Server.

TOTAL TRANS

The total number of transactions observed for the class.

MAXIMUM ALLOWED

The maximum number of tasks of this class that may be processed concurrently. This value is specified in the MAXACTIVE field of the TRANCLASS definition.

MAXIMUM OBSERVED

The maximum number of tasks of this class that were in existence at any one time. This value includes active and inactive tasks.

TIMES AT MAXIMUM

The number of times that CICS was called upon to create a classed task and either:

• Set the task counter equal to the maximum number of tasks allowed for that class, or
• Found that the maximum number of tasks had already been reached.

TOTAL QUEUED

The total number of transactions queued for the class.

MAXIMUM QUEUED

The maximum number of transactions observed at any one time that were queued for the class.

PURGE THRESHLD

The limit at which transactions are purged rather than added to the queue of transactions waiting to execute in this transaction class.

TIMES AT THRESHLD

The number of times that the transactions for the class were at the purge threshold.

TOTAL PURGED IMMEDIATE

The number of transactions that were purged immediately due to the queue of transactions for the class reaching the purge threshold.

TOTAL PURGED QUEUED

The total number of transactions purged that were waiting in the queue to execute. This number includes those transactions purged explicitly through the Master Terminal or implicitly through the purge threshold of the transaction class being lowered.

Storage Statistics

The Storage Statistics report shows storage control statistics.

MAIN STORAGE: ACQUISITIONS

The number of storage acquisitions (GETMAINs) that CICS made.

MAIN STORAGE: RELEASES

The number of storage releases (FREEMAINs) that CICS made.

CONDITIONAL GETMAIN FAILURES

The number of conditional storage requests that failed.

STORAGE VIOLATIONS

The number of storage violations that occurred.

STORAGE CUSHION RELEASES

The number of times that CICS signaled a short-on-storage condition, either because available main storage had fallen below a threshold value or because a storage area could not be allocated because the available storage was fragmented.

STORAGE REQUESTS ENQUEUED

The number of times that CICS was unable to satisfy a request for main storage.

TIMES STORAGE QUEUE ESTABLISHED

The number of times that CICS started a new storage queue.

MAXIMUM NUMBER OF STORAGE REQUESTS ENQUEUED

The maximum number of enqueued requests for storage.

VTAM Statistics

The VTAM Statistics report shows performance statistics for VTAM operations performed for the CICS region.

RECEIVE-ANY REQUESTS: MAXIMUM NUMBER

The maximum number of receive-any request parameter lists (RPLs) that were posted by CICS at any single dispatching of terminal control.

RECEIVE-ANY REQUESTS: NUMBER OF TIMES AT MAX

The number of times that the maximum number of RPLs that Strobe detected was reached.

NUMBER OF DYNAMIC OPENS

The number of times that a VTAM Access Method Control Block was opened through the master terminal.

NUMBER OF TIMES SHORT-ON-STORAGE CONDITION OCCURRED

The number of times a VTAM indicated a VTAM temporary storage problem.

Configuration Parameters and System-Wide Statistics Reports (Continued)

Temporary Storage Statistics

The Temporary Storage Statistics report shows performance statistics for operations on CICS temporary storage.

MAIN STORAGE: PUT AND PUTQ REQUESTS

The number of records written to main temporary storage.

MAIN STORAGE: GET AND GETQ REQUESTS

The number of records retrieved from main temporary storage.

MAIN STORAGE: MAXIMUM VIRTUAL STORAGE USED

The maximum amount of virtual storage in use at any one time for temporary storage data.

AUXILIARY STORAGE: PUT AND PUTQ REQUESTS

The number of records written to auxiliary temporary storage.

AUXILIARY STORAGE: GET AND GETQ REQUESTS

The number of records retrieved from auxiliary temporary storage.

AUXILIARY STORAGE: NUMBER OF TIMES EXHAUSTED

The number of times one or more transactions may have been suspended because of insufficient space in a temporary storage data set.

QUEUES: MAXIMUM NUMBER OF IDS

The maximum number of temporary storage queue names in existence at one time.

QUEUES: MAXIMUM ITEMS IN A QUEUE

The maximum number of entries held at one time on any temporary storage queue.

QUEUES: TIMES QUEUE CREATED

The number of temporary storage queues that CICS created.

BUFFERS: NUMBER

The number of buffers allocated for temporary storage by CICS.

BUFFERS: NUMBER OF BUFFER WAITS

The number of times a request for a temporary storage buffer was enqueued because all buffers were in use.

BUFFERS: MAXIMUM USERS WAITING

The maximum number of temporary storage requests that were enqueued because no buffers were available.

BUFFERS: NUMBER OF READS

The number of times that a control interval had to be read.

BUFFERS: NUMBER OF WRITES

The number of WRITE operations issued for the temporary storage data set. This number includes WRITE operations forced by recovery, as well as those forced because the buffer was needed to accommodate another control interval.

BUFFERS: WRITES FORCED BY RECOVERY

The number of WRITE operations issued because recovery was specified for queues.

CONTROL INTERVALS: SIZE

The size of the control interval used to transmit data between direct-access storage and main storage.

CONTROL INTERVALS: NUMBER

The number of control intervals available for temporary storage data.

CONTROL INTERVALS: MAXIMUM NUMBER ALLOCATED

The maximum number of control intervals containing active data at one time.

CONTROL INTERVALS: NUMBER OF COMPRESSIONS

The number of times that CICS compressed the unused space in a control interval following a user-issued deletion of a record.

CONTROL INTERVALS: PUTS EXCEEDING CI SIZE

The number of records written to temporary storage that exceeded the size of the control interval.

CONTROL INTERVALS: NUMBER OF I/O ERRORS

The number of I/O errors that occurred during operations on the auxiliary storage data set used for temporary storage.

MESSAGE SETS: EXTENSION THRESHOLD

The number of records to be held in a single temporary storage group identifier. This statistic is not reported for CICS Transaction Server Release 1.3 and later.

MESSAGE SETS: NUMBER OF TSGID EXTENSIONS

The number of times CICS created a temporary storage group (TSGID) extension. This statistic is not reported for CICS Transaction Server Release 1.3 and later.

SHARED QUEUES: POOLS CONNECTED

The number of storage pools connected for shared temporary storage queues.

SHARED QUEUES: POOLS DEFINED

The number of storage pools defined for shared temporary storage queues.

SHARED QUEUES: NUMBER OF READS

The number of reads observed for shared temporary storage queues.

SHARED QUEUES: NUMBER OF WRITES

The number of writes observed for shared temporary storage queues.

STRINGS: NUMBER

The number of VSAM strings specified in the TSMGSET parameter of the System Initialization Table.

STRINGS: NUMBER OF STRING WAITS

The number of I/O requests for auxiliary temporary storage that were unqueued because no string was available.

STRINGS: MAXIMUM USERS WAITING

The maximum number of I/O requests waiting at any one time because no string was available.

STRINGS: MAXIMUM NUMBER IN USE

The maximum number of concurrent I/O operations observed for auxiliary temporary storage.

Transient Data Statistics

The Transient Data Statistics—Buffer and String Statistics report shows statistics related to buffers, strings, control intervals, and I/O operations on transient data queues.

BUFFERS: NUMBER ALLOCATED

The number of buffers allocated for transient storage. This value is specified in the TD parameter of the System Initialization Table.

BUFFERS: MAXIMUM NUMBER IN USE

The maximum number of buffers for transient data that were in use at a single time.

BUFFERS: ALLOCATION REQUESTS, TOTAL

The number of requests for transient data buffers.

BUFFERS: ALLOCATION REQUESTS, MAXIMUM CONCURRENT

The maximum number of concurrent allocation requests for transient data buffers.

BUFFERS: ENQUEUED REQUESTS, TOTAL

The number of requests for transient data buffers that were enqueued because no buffer was available.

BUFFERS: ENQUEUED REQUESTS, MAXIMUM CONCURRENT

The maximum number of requests for transient data buffers that were enqueued concurrently because no buffer was available.

CONTROL INTERVALS: NUMBER

The number of available control intervals allocated for transient data.

CONTROL INTERVALS: LENGTH

The size, in bytes, of control intervals for transient data.

CONTROL INTERVALS: MAXIMUM NUMBER ALLOCATED

The maximum number of control intervals in use.

STRINGS: NUMBER

The number of strings allocated for transient storage. This value is specified in the TD parameter of the System Initialization Table.

STRINGS: ALLOCATION REQUESTS, TOTAL

The number of requests for transient data strings.

STRINGS: ALLOCATION REQUESTS, MAXIMUM CONCURRENT

The maximum number of concurrent allocation requests for transient data strings.

STRINGS: ENQUEUED REQUESTS, TOTAL

The number of requests for transient data strings that were enqueued because no string was available.

STRINGS: ENQUEUED REQUESTS, MAXIMUM CONCURRENT

The maximum number of requests for transient data strings that were enqueued concurrently because no string was available.

I/O OPERATIONS: PUT REQUESTS

The number of PUT requests for transient data storage.

I/O OPERATIONS: GET REQUESTS

The number of GET requests for transient data storage.

I/O OPERATIONS: NO-SPACE RETURNS

The number of no-space returns in response to requests for operations on transient data storage.

I/O OPERATIONS: I/O ERRORS

The number of errors that occurred during I/O operations on transient data storage.

Miscellaneous Statistics

The Miscellaneous Statistics report shows statistics related to storage dumps and dynamic transaction backout operations.

DYNAMIC TRANSACTION BACKOUT: NUMBER OF RECORDS LOGGED

The number of records written to the dynamic log for dynamic transaction backout. (For CICS Transaction Server Release 1.3 and more current, this statistic is not reported.)

DYNAMIC TRANSACTION BACKOUT: NUMBER OF RECORDS SPILLED

The number of records for dynamic transaction backout that were written to temporary storage because the dynamic log was full. This statistic is not reported for CICS Transaction Server Release 1.3 and more current.

STORAGE DUMPS: NUMBER OF TRANSACTION DUMPS

The number of storage dump records written.

STORAGE DUMPS: NUMBER OF WRITE ERRORS

The number of WRITE errors that occurred during storage dump operations.