SAP ENQUEUE_READ Function Module for Read lock entries from lock table
ENQUEUE_READ is a standard enqueue read SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Read lock entries from lock table processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.
See here to view full function module documentation and code listing for enqueue read FM, simply by entering the name ENQUEUE_READ into the relevant SAP transaction such as SE37 or SE38.
Function Group: SENT
Program Name: SAPLSENT
Main Program: SAPLSENT
Appliation area: S
Release date: 10-Nov-1994
Mode(Normal, Remote etc): Remote-Enabled
Update:
Function ENQUEUE_READ pattern details
In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.CALL FUNCTION 'ENQUEUE_READ'"Read lock entries from lock table.
EXPORTING
* GCLIENT = SY-MANDT "Client
* GNAME = ' ' "Granularity name (-> table name)
* GARG = ' ' "Granularity value(->values of key fields)
* GUNAME = SY-UNAME "User Name
* LOCAL = ' ' "Single-Character Flag
* FAST = ' ' "Redundant table fields are not fully filled
* GARGNOWC = ' ' "All characters in GARG are literals
IMPORTING
NUMBER = "Number of chosen lock entries
SUBRC = "Error code of the enqueue call
TABLES
ENQ = "List of the chosen lock entries
EXCEPTIONS
COMMUNICATION_FAILURE = 1 SYSTEM_FAILURE = 2
IMPORTING Parameters details for ENQUEUE_READ
GCLIENT - Client
Data type: SEQG3-GCLIENTDefault: SY-MANDT
Optional: Yes
Call by Reference: No ( called with pass by value option)
GNAME - Granularity name (-> table name)
Data type: SEQG3-GNAMEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
GARG - Granularity value(->values of key fields)
Data type: SEQG3-GARGDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
GUNAME - User Name
Data type: SEQG3-GUNAMEDefault: SY-UNAME
Optional: Yes
Call by Reference: No ( called with pass by value option)
LOCAL - Single-Character Flag
Data type: SY-CTYPEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
FAST - Redundant table fields are not fully filled
Data type: SY-CTYPEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
GARGNOWC - All characters in GARG are literals
Data type: SY-CTYPEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
EXPORTING Parameters details for ENQUEUE_READ
NUMBER - Number of chosen lock entries
Data type: SY-TABIXOptional: No
Call by Reference: No ( called with pass by value option)
SUBRC - Error code of the enqueue call
Data type: SY-SUBRCOptional: No
Call by Reference: No ( called with pass by value option)
TABLES Parameters details for ENQUEUE_READ
ENQ - List of the chosen lock entries
Data type: SEQG3Optional: No
Call by Reference: No ( called with pass by value option)
EXCEPTIONS details
COMMUNICATION_FAILURE - See RFC documentation
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
SYSTEM_FAILURE - See RFC documentation
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
Copy and paste ABAP code example for ENQUEUE_READ Function Module
The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.DATA: | ||||
lt_enq | TYPE STANDARD TABLE OF SEQG3, " | |||
lv_number | TYPE SY-TABIX, " | |||
lv_gclient | TYPE SEQG3-GCLIENT, " SY-MANDT | |||
lv_communication_failure | TYPE SEQG3, " | |||
lv_gname | TYPE SEQG3-GNAME, " SPACE | |||
lv_subrc | TYPE SY-SUBRC, " | |||
lv_system_failure | TYPE SY, " | |||
lv_garg | TYPE SEQG3-GARG, " SPACE | |||
lv_guname | TYPE SEQG3-GUNAME, " SY-UNAME | |||
lv_local | TYPE SY-CTYPE, " SPACE | |||
lv_fast | TYPE SY-CTYPE, " SPACE | |||
lv_gargnowc | TYPE SY-CTYPE. " SPACE |
  CALL FUNCTION 'ENQUEUE_READ' "Read lock entries from lock table |
EXPORTING | ||
GCLIENT | = lv_gclient | |
GNAME | = lv_gname | |
GARG | = lv_garg | |
GUNAME | = lv_guname | |
LOCAL | = lv_local | |
FAST | = lv_fast | |
GARGNOWC | = lv_gargnowc | |
IMPORTING | ||
NUMBER | = lv_number | |
SUBRC | = lv_subrc | |
TABLES | ||
ENQ | = lt_enq | |
EXCEPTIONS | ||
COMMUNICATION_FAILURE = 1 | ||
SYSTEM_FAILURE = 2 | ||
. " ENQUEUE_READ |
ABAP code using 7.40 inline data declarations to call FM ENQUEUE_READ
The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8."SELECT single TABIX FROM SY INTO @DATA(ld_number). | ||||
"SELECT single GCLIENT FROM SEQG3 INTO @DATA(ld_gclient). | ||||
DATA(ld_gclient) | = SY-MANDT. | |||
"SELECT single GNAME FROM SEQG3 INTO @DATA(ld_gname). | ||||
DATA(ld_gname) | = ' '. | |||
"SELECT single SUBRC FROM SY INTO @DATA(ld_subrc). | ||||
"SELECT single GARG FROM SEQG3 INTO @DATA(ld_garg). | ||||
DATA(ld_garg) | = ' '. | |||
"SELECT single GUNAME FROM SEQG3 INTO @DATA(ld_guname). | ||||
DATA(ld_guname) | = SY-UNAME. | |||
"SELECT single CTYPE FROM SY INTO @DATA(ld_local). | ||||
DATA(ld_local) | = ' '. | |||
"SELECT single CTYPE FROM SY INTO @DATA(ld_fast). | ||||
DATA(ld_fast) | = ' '. | |||
"SELECT single CTYPE FROM SY INTO @DATA(ld_gargnowc). | ||||
DATA(ld_gargnowc) | = ' '. | |||
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