OpenEdge Data Management: DataServer for Microsoft SQL Server

DataServer connection management
Connection pooling
When an ABL session is established, the DataServer for Microsoft SQL Server opens
the number of read-only connections specified in the PRGRS_CACHE_CONN value. The
DataServer maintains these connections for the duration of an ABL session, reusing
them for subsequent queries.
Enabling connection management
DataServer connection management is enabled and tuned with the
PRGRS_CACHE_CONN option to the -Dsrv connection parameter. Connection
management is enabled by default, and the default number of managed connections is
5. Change the number of connections using the following syntax:
Syntax
-Dsrv PRGRS_CACHE_CONN,n
Where n is the number of managed connections.
Disabling connection management
DataServer connection management is disabled by setting the number of managed
connections to zero, as shown:
-Dsrv PRGRS_CACHE_CONN,0
Connections exclusively for stored procedures
When DataServer connection management is enabled, connections for stored
procedures are allocated from the managed connections. If your stored procedures
modify the connection environment or attributes, allocate a set of managed
connections exclusively for stored procedures to prevent the modified connections
from being reallocated for general use.
Allocate managed connections exclusively for stored procedures with the following
syntax:
Syntax
-Dsrv PRGRS_SP_CACHE_CONN,n
Where n is the number of managed connections allocated to stored procedures. Set n
to a value large enough to handle the largest number of stored procedures you can run
simultaneously. If you exceed n, the connection will be allocated from the ODBC
connection pool, if enabled, making the modified connection available for general
reuse.
Note: This switch is off by default, and is only needed for applications that modify the
connection environment or attributes within stored procedures.
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