DDM commands and command objects

IMS supports a subset of the distributed data management (DDM) architecture commands and command objects and defines other IMS product-unique DDM commands.

ACCRDB command (X'2001')
The distributed data management (DDM) architecture ACCRDB command allocates a program specification block (PSB) on behalf of the source server. The PSB represents a connection between the DDM source server and an IMS database.
ACCSEC command (X'106D')
The ACCSEC DDM command is used to determine the type of security checking that is performed when an application program on the source server connects to a database on the IMS target server.
CLSQRY command (X'2005')
The distributed data management (DDM) Architecture CLSQRY command closes a query that was opened previously by an OPNQRY call.
CNTQRY command (X'2006')
The distributed data management (DDM) architecture CNTQRY command continues a query by resuming the return of the result set data that was generated by a previous OPNQRY call.
DEALLOCDB command (X'C801')
The distributed data management (DDM) DEALLOCDB command terminates all resources that are associated with a PSB by deallocating the PSB named in the RDBNAM parameter.
DLIFUNC command object (X'CC05')
Use the distributed data management (DDM) architecture DLIFUNC (DL/I function) command object to specify the DL/I function that is being called.
DLIFUNCFLG command object (X'CC09')
Use the distributed data management (DDM) architecture DLIFUNCFLG (DL/I function flag) command object to specify whether a DL/I batch processing operation starts with a GU or a GN call and which SSA list is associated with each call.
EXCSAT command (X'1041')
The distributed data management (DDM) architecture EXCSAT command initiates the exchange of attributes between a source application server and an IMS target server to identify the server class names and levels of DDM support of each server. The EXCSAT command must always be the first command sent from a source server to the IMS target server.
EXCSQLIMM command (X'200A')
The distributed data management (DDM) architecture EXCSQLIMM command executes an insert, update, or delete operation on an IMS database.
EXCSQLSET command (X'2014')
The distributed data management (DDM) architecture Execute SQL SET command (EXCSQLSET) executes one or more SET statements to establish the application environment.
FLDENTRY command object (X'CC03')
Use the distributed data management (DDM) architecture FLDENTRY (field entry) command object to specify the field to insert or update.
FLDENTRYREL command object (X'CC0C')
Use the distributed data management (DDM) architecture FLDENTRYREL (relative field entry) command object to specify which field to insert or update.
IMSCALL command (X'C803')
Use the distributed data management (DDM) architecture IMSCALL command to issue DL/I calls for IMS DB system services.
INAIB command object (X'CC01')
Use the distributed data management (DDM) architecture INAIB (input AIB) command object to contain the AIB data to send from the source to the target server.
MONITORRD command (X'1C00')
The distributed data management (DDM) architecture MONITORRD allows the target agent to return monitoring data to the source agent. The value returned is used to determine the elapsed CPU time for a database call.
OPNQRY command (X'200C')
The distributed data management (DDM) architecture OPNQRY command opens a query to a database for a read request.
PRPSQLSTT command (X'200D')
The distributed data management (DDM) architecture Prepare SQL Statement command (PRPSQLSTT) dynamically binds a SQL statement to a section in an existing database (RDB) package.
RLSE command (X'C802')
Use the distributed data management (DDM) architecture RLSE command to release any database locks that are held by the application.
RTRVFLD command object (X'CC04')
Use the distributed data management (DDM) architecture RTRVFLD command object to specify the field that the client wants to retrieve data from.
RTRVFLDREL command object (X'CC0B')
Use the distributed data management (DDM) architecture FLDENTRYREL (relative retrieve field) command object to specify which field the client wants to retrieve data from.
SECCHK command (X'106E')
The distributed data management (DDM) architecture SECCHK command passes the user information from the source server to the target security manager of the IMS target server to authenticate the user with RACF® or another security product.
SEGMLIST command object (X'CC0A')
Use the distributed data management (DDM) architecture SEGMLIST (Segment List) command object to specify the minimum and maximum length of each segment being retrieved or updated.
SQLATTR command (X'2450')
The distributed data management (DDM) architecture SQL Statement Attributes command (SQLATTR) specifies the SQL statement attributes being prepared.
SQLCARD command (X'2408')
The distributed data management (DDM) architecture SQL Descriptor Area Row Description with SQL Communications Area command (SQLCARD) provides metadata information about the columns being retrieved along with the communications area.
SQLDARD command (X'2411')
The distributed data management (DDM) architecture SQL Descriptor Area Row Description with SQL Communications Area command (SQLDARD) provides metadata information about the columns being retrieved along with the communications area.
SQLDTA command (X'2412')
SQL Program Variable Data (SQLDTA) consists of input data to a SQL statement that a relational database (RDB) is running. It also includes a description of the data.
SQLSTT command (X'2414')
The distributed data management (DDM) architecture SQL Statement Row Description (SQLSTT) command contains one SQL statement.
SSALIST command object (X'CC06')
Use the distributed data management (DDM) architecture SSALIST command object to contain the list of segment search argument (SSA) objects to qualify the DL/I call.

Parent topic: DRDA DDM command architecture reference