| Specification: | CLI 1.1 | ODBC 1.0 | ISO CLI |
SQLDisconnect() closes the connection associated with the database connection handle.
After calling this function, either call SQLConnect() to connect to another database, or call SQLFreeHandle().
Syntax
SQLRETURN SQLDisconnect (SQLHDBC ConnectionHandle;) /* hdbc */
Function arguments
Tabelle 40. SQLDisconnect arguments
| Data type | Argument | Use | Description |
|---|---|---|---|
| SQLHDBC | ConnectionHandle | input | Connection handle. |
Usage
If an application calls SQLDisconnect() before it frees all the statement handles associated with the connection, CLI frees them after it successfully disconnects from the database.
If SQL_SUCCESS_WITH_INFO is returned, it means that the disconnect from the database is successful, but additional error or implementation-specific information is available. For example, a problem is encountered during processing subsequent to disconnecting the connection, or if there is no current connection because of an event that occurred independently of the application (such as communication failure).
After a successful SQLDisconnect() call, the application can reuse ConnectionHandle to make another SQLConnect() or SQLDriverConnect() request.
Return codes
Diagnostics
Tabelle 41. SQLDisconnect SQLSTATEs
| SQLSTATE | Description | Explanation |
|---|---|---|
| 01002 | Disconnect error. | An error occurred during the disconnection. However, the disconnection succeeded. (Function returns SQL_SUCCESS_WITH_INFO.) |
| 08003 | Connection is closed. | The connection specified in the argument ConnectionHandle is not open. |
| 58004 | Unexpected system failure. | Unrecoverable system error. |
| HY001 | Memory allocation failure. | CLI is unable to allocate memory required to support execution or completion of the function. |
| HY013 | Unexpected memory handling error. | CLI is unable to access memory required to support execution or completion of the function. |
Restrictions
None.
Zugehörige Referenzen