This method stops both reception and import processing and terminates the target Datareplicator. When the simultaneous stop method is used, the update information that is sent from the source system is not received because reception processing stops. The target Datareplicator's termination timing depends on the termination mode, as described below.

(a) When the termination mode is normal termination

Import processing stops and the target Datareplicator terminates when import processing has been completed through the end of the source system's operation unit that is active when the hdsstop command is executed.

If the source database is a HiRDB, the operation unit is from normal startup to normal termination of the entire target source system. For details about the operation unit when the source database is a HiRDB, see the VOS3 XDM/DS manual.

• Purpose
  This method is appropriate when you want to terminate the source system or target system normally.
  
• Specification and operation at the source system
  Terminate the source system normally.
  
• Command execution
  Execute the hdsstop command.
  

(b) When the termination mode is event termination

Import processing stops and the target Datareplicator terminates when a specific event sent from the source system is detected after executing the hdsstop -t event command. However, if import processing has been completed through the end of the source system's operation unit before the event is detected, import processing will have already terminated before the event is detected.

If the table-based import method is being used, import processing stops when the last group of import processes is completed among all active import processes. When the source Datareplicator has been terminated by the event termination mode, import processing starts from the previous point of termination the next time the target Datareplicator is started.

• Purpose
  This method is appropriate when you want to terminate the target system intentionally.
  
• Specification and operation at the source system
  If the source database is a HiRDB, execute the hdeevent command at the source Datareplicator. If it is a mainframe database, specify as an event the UAP that is subject to extraction; make this specification immediately before the intended termination of import processing.
  
• Command execution
  Execute the hdsstop -t event command.
  

(c) When the termination mode is immediate termination

Import processing stops and the target Datareplicator terminates when import of the update information currently being processed is completed after execution of the hdsstop -t immediate command.

If the table-based import method is being used, groups of active import processes stop sequentially beginning with the one furthest along in import processing, and import processing stops when the last group reaches the first group's termination point.

After the command has executed, if new update information is received before the last group of import processing terminates, reception processing stops when the update information is stored in the import information queue file.

• Purpose
  This method is appropriate when you want to stop the target system temporarily or terminate import processing while reception processing is underway.
  
• Command execution
  Execute the hdsstop -t immediate command.
  

(d) When the termination mode is forced termination

Import processing stops and the target Datareplicator terminates immediately when the hdsstop -t force command is executed. If synchronization point processing is underway, import processing stops when the synchronization point processing is completed. When you use the forced termination mode, a loss of conformity might occur between the source and target databases; however, the next time the source Datareplicator starts, the source database will be recovered automatically.

• Purpose
  This method is appropriate when you want to terminate the target system immediately.
  
• Command execution
  Execute the hdsstop -t force command.
  

This method stops only import processing, without stopping reception processing. Because reception processing is still underway, update information sent from the source system is stored in the import information queue file. There are two types of independent stop.

(a) Command termination method

This method stops import processing when the hdsrfctl command has executed, and then an event sent from the source system is detected.

• Purpose
  This method is appropriate when you want to request termination of import processing from the target system.
  
• Command execution
  Execute the hdsrfctl command.
  

(b) Event stop method

This method stops import processing when an import processing stop event sent from the source system is detected.

• Purpose
  This method is appropriate when you want to request termination of import processing from the source system.
  
• Specification and operation at the source system
  If the source database is a HiRDB, execute the hdeevent command at the source Datareplicator. If it is a mainframe database, specify as an event the UAP that is subject to extraction; make this specification immediately before the intended termination of import processing.
  
• Specification in the import environment definition
  Use the eventspd operand to establish correspondence with an event code specified at the source system.
  
• Command execution
  There is no need to execute a command.