StorageTek 312564001 Manual Do Utilizador

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DB2 Manager User Guide 
59 
 StorageTek 
Proprietary 
 
 
WRITETIMEOUT  parameters. The command may be abbreviated to the 
single character 'S'.   
The values of MAXTRDR, MAXDRDR, MAXSCHED, MAXQLEN, 
RETAINTAPE, TAPEWAIT, OBJSIZE, READTIMEOUT and 
WRITETIMEOUT are initially set during DB2 Manager control region 
initialization from the corresponding parameters in the TAPECNTL and 
ENVCNTL members of the DB2 Manager parameter library. 
Valid parameters for the SET command are: 
 
MAXTRDR -  DB2 Manager will alter the current setting of the 
MAXTRDR parameter to the value specified in the SET 
command.  The value ‘nnn’ must be a 1-3 digit numeric 
value in the range 0-255.  
 
If the value of MAXTRDR is to be increased, DB2 Manager 
will increase the number of initialized tape reader tasks, by 
restarting terminated tasks, and/or adding new tasks.    
 
If the value of MAXTRDR is to be decreased, DB2 
Manager will terminate a number of existing tasks equal to 
the decrease in the value of MAXTRDR. These tasks will 
appear with the status TERM in any subsequent status 
display, and will not be available for object recall 
processing. 
 
Note that processing of this command may take a little 
time for significant changes in the value of MAXTRDR. 
 
MAXDRDR -  DB2 Manager will alter the current setting of the 
MAXDRDR parameter to the value specified in the SET 
command.  The value ‘nnn’ must be a 1-3 digit numeric 
value in the range 0-255.  
 
If the value of MAXDRDR is to be increased, DB2 Manager 
will increase the number of initialized disk reader tasks, by 
restarting terminated tasks, and/or adding new tasks.    
 
If the value of MAXDRDR is to be decreased, DB2 
Manager will terminate a number of existing disk reader 
tasks equal to the decrease in the value of MAXDRDR. 
These tasks will appear with the status TERM in any 
subsequent status display, and will not be available for 
object recall processing. 
 
Note that processing of this command may take a little 
time for significant changes in the value of MAXDRDR. 
 MAXTWTR -  DB2 Manager will alter the current setting of the 
MAXTRDR parameter to the value specified in the SET 
command.  The value ‘nnn’ must be a 1-3 digit numeric 
value in the range 1-255.