PvModifyDSN()

Distributed Tuning Interface Reference : PvModifyDSN()

PvModifyDSN()

Modifies an existing data source name.

Header File: catalog.h (See also Header Files)

Function First Available In Library: w3dbav78.dll (Windows), libpsqldti.so (Linux), libpsqldti.dylib (macOS) (See also Link Libraries)

This function is deprecated in PSQL v11 and higher versions. Use the ODBC API to work with client DSNs.

Syntax

BTI_API PvModifyDSN(

BTI_LONG hConnection,

BTI_CHAR_PTR pdsnName,

BTI_CHAR_PTR pdsnDesc,

BTI_CHAR_PTR pdsnDBQ,

BTI_LONG openMode);

Arguments

In	hConnection	Connection handle that identifies the server. Connection handles are obtained with the PvConnectServer() function.
In	pdsnName	Name of the DSN to modify.
In	pdsnDesc	New description for the DSN.
In	pdsnDBQ	New Database name for the DSN.
In	openMode	New Open mode for the DSN, which is one of the following: NORMAL_MODE ACCELERATED_MODE, READONLY_MODE EXCLUSIVE_MODE See also DSN Open Mode in ODBC Guide.

Return Values

P_OK	The operation was successful.
P_E_INVALID_HANDLE	Invalid connection handle.
P_E_NULL_PTR	Call with NULL pointer.
P_E_DSN_DOES_NOT_EXIST	The specified DSN name does not exist.
P_E_ACCESS_RIGHT	Insufficient access right for the operation.
P_E_INVALID_OPEN_MODE	The specified open mode is invalid.
P_E_FAIL	Failed to retrieve data path.

Remarks

The following preconditions must be met:

•DTI session started by calling PvStart()

•Connection established by PvConnectServer() or if you are performing the operation on a local machine, P_LOCAL_DB_CONNECTION may be used as the connection handle.