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$EcbDGet gets string data associated with an Event Control Block (ECB).


$EcbDGetT(ECB-number | 'CPQZ')


  • ECB-number is a string with a numeric value from one to the NECBS parameter that identifies the ECB from which to retrieve the text. The ECB number can be expressed as a numeric literal, a %variable, or a field name.
  • CPQZ is a named ECB used by the NonStop/204 facility to automatically post an extended quiesce. See Media recovery NonStop/204 for an explanation of the facility.

    To use CPQZ, you need not set the NECBS parameter. CPQZ can be expressed as a literal, a %variable, or a field name. When CPQZ is specified, the value of the $EcbDGet function can be non-null (except for error values) during only extended quiesce. CPQZ is internally cleared to null when the system exits extended quiesce.


When the $EcbDGet function is successful, it returns your data as a text string up to 255 bytes long. If you make a coding mistake, you may receive one of the following return codes as a string.

Return code Meaning
2 Bad argument specified
3 NECBS parameter is not specified or is zero
4 The input argument is less than one or greater than the NECBS parameter
5 NUSERS = 1
8 No argument specified
9 Checkpoints are inactive, if using extended quiesce ECB named CPQZ
12 Invalid argument CPQZ or invalid argument following QZSIG.

The $EcbDGet function retrieves data set by either the $EcbDSet function or the $Post function for the specified ECB.

The post code, set by the $Post function, can be obtained by the $StatusD function issued after the $EcbTest function.


%x = $ecbdGet(17)

See also

The ECB-related $functions are: