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- CA-IDMS Server Client Interface
-
-
- Notes:
-
- 1. Do not set the Bulk Fetch Row Count to a number greater than 255.
- This will cause the windows application to terminate abnormally.
- This bug is corrected with the 9407 genlevel of the CA-IDMS SQL
- Feature. This setting should generally be left at 0, which lets the
- driver choose the appropriate value for size of the fetch buffer.
-
- 2. The result set of the SQLTables call can be cached. Repeated SQLTables
- calls with the same parameters on a connection will use the cached
- result set if this option is off. Changing the parameters, turning
- cacheing off, changing the catalog accessible tables view name, and
- disconnecting will flush the cache.
-
- The default is no cacheing, use the Database Settings dialog of the
- ODBC administration application to turn it on.
-
- 3. The default for SQLTables is to use the SYSCA.ACCESSIBLE tables view.
-
- 4. The ESCAPE character '\' is supported in identifiers of the
- SQLTables and SQLColumns functions.
-
- 5. SQLStatistics will not update statistics even when ENSURE is specified.
- This can be changed using the administration application. See note
- below for more information.
-
- 6. All catalog functions are executed on a separate internal SQL session
- to reduce the chance of deadlocks and avoid problems with different
- page groups for the catalog and user data areas. This session consists
- of just one "transaction" that is set to READ ONLY and TRANSIENT READ.
- SQLTransact has no effect on it, nor does Autocommit. The session is
- started and released automatically.
-
- 7. The default Cursor Commit behavior is PRESERVE. The IDMS driver
- issues COMMIT CONTINUE for SQLTransact (and for Autocommit). This
- can be changed using the administration program. CLOSE is simulated
- by saving the syntax and reissuing the prepare on SQLExecute.
-
- When Cursor Commit behavior is PRESERVE, SQLGetInfo will report that
- Cursor Rollback behavior is also PRESERVE, even though it is actually
- CLOSE (there is no ROLLBACK CONTINUE SQL command). This is done so
- that Microsoft Access will allow attached tables to be updated.
-
- 8. Result set information functions can be called before SQLExecute
- (see note below).
-
- 9. The extended syntax for date and time literals using escape sequences
- is supported. Note that escape sequences are not supported for
- anything else. Escape sequences are not currently supported for
- date and time values passed as parameters.
-
- 10. Tracing options can be specified using the administration program,
- avoiding the need to manually edit the CADSI.INI file. A separate
- Log Options dialog box has been added to the administration program.
-
- 11. All connections from a single Windows application to a single IDMS
- server use the same LTERM on the server, allowing more concurrent
- users than previously.
-
- 12. To use Powerbuilder from Powersoft it may be necessary to add the
- following to the CADSI.INI file in the Windows directory:
-
- [Options] ; global options
- DisableEnsure=1
-
- ;- or -
-
- [<data source name>] ; data source specific options
- DisableEnsure=1
-
- This will prevent the ODBC SQLStatistics function from attempting
- to issue an UPDATE STATISTICS FOR TABLE <table> when the SQL_ENSURE
- option is specified. Powerbuilder currently specifies this option
- when determining what indexes exist for a table.
-
- This option is also useful to prevent SQLStatistics from attempting
- to update statistics for large tables. This can be a very expensive
- operation, and could cause the CAICCI component to time out (which
- will be reported as a "DTS" error, with more information in the
- CADSI log file).
-
- The default setting for this is 1 (on).
-
- 13. Parameters can be defined after a statement is prepared, that is,
- SQLSetParam can be issued after SQLPrepare (but still must be
- issued before SQLExecute or SQLExecuteDirect). SQLDescribeCol,
- SQLColAttributes, and SQLNumResultCols can be issued before
- SQLExecute and will cause the statement to be compiled on the server.
- Note that all parameters must be specified with SQLSetParam before
- IDMS can compile the command.
-
- 14. SQLSetConnectOption allows specification of time out interval.
- SQLGetConnectOption returns a value for time out interval.
- Time out intervals are currently specified using the CCI Configurator,
- and cannot actually be set or queried by ODBC. The IDMS ODBC driver
- appears to support them for compatibility with Microsoft Access.
-
- 15. See documentation for detailed information on IDMS ODBC conformance.
-
- 16. The CADSI.LOG file may contain error messages from the DTS component
- (IDMSTD0D.DLL) after a communication error. These messages may include
- those returned by CAICCI (LCCIWIN.DLL). The setup utility can be used
- to set a name and path for the log file.
-
- 17. Internal trace information can be controlled using SQLExecuteDirect.
- Syntax is:
-
- TRACE ODBC|IDMS OFF|ON|ALL|0xhhhh
-
- ODBC control ODBC driver trace
- IDMS control IDMS client interface trace
-
- OFF turn trace off
- ON turn on minimum trace
- ALL turn on all trace options
- 0xhhhh turn on specific trace options
-
- Trace bit definitions are included below.
-
-
- Trace flag settings:
-
- Debugging information can be written to CADSI.LOG. The following flag
- settings are provided for use by CA support staff:
-
- IDMSODBC.DLL: set in [Options] or [<data source name>] section:
- OdbcTrace=0xXXXX where 0xXXXX can be set with the following values:
-
- 0x0001 // Trace function entry.
- 0x0002 // Snap environment block.
- 0x0004 // Snap connection block.
- 0x0008 // Snap statement block.
- 0x0010 // Snap SQLDA.
-
- IDMSQCLI.DLL: set in [Options] or [<data source name>] section:
- IdmsTrace=0xXXXX where 0xXXXX can be set with the following values:
-
- 0x0001 // Trace IDMS calls
- 0x0002 // Time IDMS calls
- 0x0004 // Snap IDMS SQLSID
- 0x0008 // Snap IDMS DSICB
- 0x0010 // Snap IDMS SQLCA
- 0x0020 // Snap IDMS SQLCIB
- 0x0040 // Snap IDMS SQLPIB
- 0x0080 // Snap IDMS parm buffer
- 0x0100 // Snap IDMS tuple buffer
- 0x0200 // Snap IDMS input SQLDA
- 0x0400 // Snap IDMS output SQLDA
- 0x0800 // Snap IDMS syntax string
-
- IDMSTD0D.DLL: set in [Server <server name>] section:
- DtsTrace=0xXXXX where 0xXXXX can be set with the following values:
-
- 0x0000 // no tracing
- 0x0001 // trace function calls
- 0x0002 // trace external calls
- 0x0004 // trace events
- 0x0008 // trace events
- 0x0010 // snap user data arrays
- 0x0020 // trace events
- 0x0040 // snap PCE
- 0x0080 // snap LCE
-
- IDMSTD0D.DLL: set in [Server <server name>] section:
- DnsTrace=0xXXXX where 0xXXXX can be set with the following values:
-
- 0x0000 // no tracing
- 0x0001 // trace function calls
- 0x0010 // snap unconverted send data
- 0x0020 // snap converted send data
- 0x0040 // snap received data
- 0x0080 // snap converted received
-
- IDMSTD0D.DLL: set in [Server <server name>] section:
- CmTrace=0xXXXX where 0xXXXX can be set with the following values:
-
- 0x0000 // no tracing
- 0x0001 // trace function calls
- 0x0002 // elapsed CCI call timings
-
-