Holds information needed for the dbremote utility using the DBTools library.
Syntaxtypedef struct a_remote_sql {
short version;
MSG_CALLBACK confirmrtn;
MSG_CALLBACK errorrtn;
MSG_CALLBACK msgrtn;
MSG_QUEUE_CALLBACK msgqueuertn;
char * connectparms;
char * transaction_logs;
a_bit_field receive : 1;
a_bit_field send : 1;
a_bit_field verbose : 1;
a_bit_field deleted : 1;
a_bit_field apply : 1;
a_bit_field batch : 1;
a_bit_field more : 1;
a_bit_field triggers : 1;
a_bit_field debug : 1;
a_bit_field rename_log : 1;
a_bit_field latest_backup : 1;
a_bit_field scan_log : 1;
a_bit_field link_debug : 1;
a_bit_field full_q_scan : 1;
a_bit_field no_user_interaction : 1;
a_bit_field _unused1 : 1;
a_sql_uint32 max_length;
a_sql_uint32 memory;
a_sql_uint32 frequency;
a_sql_uint32 threads;
a_sql_uint32 operations;
char * queueparms;
char * locale;
a_sql_uint32 receive_delay;
a_sql_uint32 patience_retry;
MSG_CALLBACK logrtn;
a_bit_field use_hex_offsets : 1;
a_bit_field use_relative_offsets : 1;
a_bit_field debug_page_offsets : 1;
a_sql_uint32 debug_dump_size;
a_sql_uint32 send_delay;
a_sql_uint32 resend_urgency;
char * include_scan_range;
SET_WINDOW_TITLE_CALLBACK set_window_title_rtn;
char * default_window_title;
MSG_CALLBACK progress_msg_rtn;
SET_PROGRESS_CALLBACK progress_index_rtn;
char ** argv;
a_sql_uint32 log_size;
char * encryption_key;
const char * log_file_name;
a_bit_field truncate_remote_output_file:1;
char * remote_output_file_name;
MSG_CALLBACK warningrtn;
char * mirror_logs;
} a_remote_sql; |
Members| Member | Description | ||||||
|---|---|---|---|---|---|---|---|
| version | DBTools version number. | ||||||
| confirmrtn | Pointer to a function that prints the given message and accepts a yes or no response returning TRUE if yes and FALSE if no. | ||||||
| errorrtn | Pointer to a function that prints the given error message. | ||||||
| msgrtn | Pointer to a function that prints the given informational (non-error) message. | ||||||
| msgqueuertn | Pointer to a function that should sleep for the number of milliseconds passed to it. This function is called with 0 when DBRemoteSQL is busy, but wants to allow the upper layer to process messages. This routine should return MSGQ_SLEEP_THROUGH normally, or MSGQ_SHUTDOWN_REQUESTED to stop SQL Remote processing. | ||||||
| connectparms |
Parameters needed to connect to the database. Corresponds to the dbremote -c option. They take the form of connection strings, such as the following:
The database server would be started by the connection string START parameter. For example:
A full example connection string including the START parameter:
For a list of connection parameters, see Connection parameters. |
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| transaction_logs | Pointer to a string naming the directory with offline transaction logs. Corresponds to the transaction_logs_directory argument of dbremote. | ||||||
| receive |
If receive is true, messages are received. Corresponds to the dbremote -r option. If receive and send are both false then both are assumed true. It is recommended that you set both to false. |
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| send |
If send is true, messages are sent. Corresponds to the dbremote -s option. If receive and send are both false then both are assumed true. It is recommended that you set both to false. |
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| verbose | When true, extra information is printed. Corresponds to the dbremote -v option. | ||||||
| deleted | Should be set to true. If false, messages are not deleted after they are applied. Corresponds to dbremote -p option. | ||||||
| apply | Should be set to true. If false, messages are scanned, but not applied. Corresponds to dbremote -a option. | ||||||
| batch | If true, force exit after applying messages and scanning log. Same as at least one user having 'always' send time. If false, allow run mode to be determined by remote users' send times. | ||||||
| more | Should be set to true. | ||||||
| triggers | Should be set to false usually; otherwise, true means DBRemoteSQL replicates trigger actions. Corresponds to the dbremote -t option. | ||||||
| debug | Include debugging output if set true. | ||||||
| rename_log | If set to true, logs are renamed and restarted. | ||||||
| latest_backup | If set to true, only process logs that are backed up. Don't send operations from a live log. Corresponds to the dbremote -u option. | ||||||
| scan_log | Reserved; set to false. | ||||||
| link_debug | If set to true, debugging is turned on for links. | ||||||
| full_q_scan | Reserved; set to false. | ||||||
| no_user_interaction | If set to true, no user interaction is requested. | ||||||
| max_length | Set to the maximum length (in bytes) a message can have. This affects sending and receiving. The recommended value is 50000. Corresponds to the dbremote -l option. | ||||||
| memory | Set to the maximum size (in bytes) of memory buffers to use while building messages to send. The recommended value is at least 2 * 1024 * 1024. Corresponds to the dbremote -m option. | ||||||
| frequency | Set the polling frequency for incoming messages. This value should be set to the max( 1, receive_delay/60 ). See receive_delay below. | ||||||
| threads | Set the number of worker threads that should be used to apply messages. This value must not exceed 50. Corresponds to the dbremote -w option. | ||||||
| operations | This value is used when applying messages. Commits are ignored until DBRemoteSQL has at least this number of operations(inserts, deletes, updates) that are uncommitted. Corresponds to the dbremote -g option. | ||||||
| queueparms | Reserved; set to NULL. | ||||||
| locale | Reserved; set to NULL. | ||||||
| receive_delay | Set this to the time (in seconds) to wait between polls for new incoming messages. The recommended value is 60. Corresponds to the dbremote -rd option. | ||||||
| patience_retry | Set this to the number of polls for incoming messages that DBRemoteSQL should wait before assuming that a message it is expecting is lost. For example, if patience_retry is 3 then DBRemoteSQL tries up to three times to receive the missing message. Afterward, it sends a resend request. The recommended value is 1. Corresponds to the dbremote -rp option. | ||||||
| logrtn | Pointer to a function that prints the given message to a log file. These messages do not need to be seen by the user. | ||||||
| use_hex_offsets | Set to true if you want log offsets to be shown in hexadecimal notation; otherwise decimal notation will be used. | ||||||
| use_relative_offsets | Set to true if you want log offsets to be displayed as relative to the start of the current log file. Set to false if you want log offsets from the beginning of time to be displayed. | ||||||
| debug_page_offsets | Reserved; set to false. | ||||||
| debug_dump_size | Reserved; set to 0. | ||||||
| send_delay | Set the time (in seconds) between scans of the log file for new operations to send. Set to zero to allow DBRemoteSQL to choose a good value based on user send times. Corresponds to the dbremote -sd option. | ||||||
| resend_urgency | Set the time (in seconds) that DBRemoteSQL waits after seeing that a user needs a rescan before performing a full scan of the log. Set to zero to allow DBRemoteSQL to choose a good value based on user send times and other information it has collected. Corresponds to the dbremote -ru option. | ||||||
| include_scan_range | Reserved; set to NULL. | ||||||
| set_window_title_rtn | Pointer to a function that resets the title of the window (Windows only). The title could be "database_name (receiving, scanning, or sending) - default_window_title". | ||||||
| default_window_title | A pointer to the default window title string. | ||||||
| progress_msg_rtn | Pointer to a function that displays a progress message. | ||||||
| progress_index_rtn | Pointer to a function that updates the state of the progress bar. This function takes two unsigned integer arguments index and max. On the first call, the values are the minimum and maximum values (for example, 0, 100). On subsequent calls, the first argument is the current index value (for example, between 0 and 100) and the second argument is always 0. | ||||||
| argv | Pointer to a parsed command line (a vector of pointers to strings). If not NULL, then DBRemoteSQL will call a message routine to display each command line argument except those prefixed with -c, -cq, or -ek. | ||||||
| log_size | DBRemoteSQL renames and restarts the online transaction log when the size of the online transaction log is greater than this value. Corresponds to the dbremote -x option. | ||||||
| encryption_key | Pointer to an encryption key. Corresponds to the dbremote -ek option. | ||||||
| log_file_name | Pointer to the name of the DBRemoteSQL output log to which the message callbacks print their output. If send is true, the error log is sent to the consolidated (unless this pointer is NULL). | ||||||
| truncate_remote_output_file | Set to true to cause the remote output file to be truncated rather than appended to. See below. Corresponds to the dbremote -rt option. | ||||||
| remote_output_file_name | Pointer to the name of the DBRemoteSQL remote output file. Corresponds to the dbremote -ro or -rt option. | ||||||
| warningrtn | Pointer to a function that prints the given warning message. If NULL, the errorrtn function is called instead. | ||||||
| mirror_logs | Pointer to the name of the directory containing offline mirror transaction logs. Corresponds to the dbremote -ml option. |
The dbremote tool sets the following defaults before processing any command-line options:
See also |
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Copyright © 2010, iAnywhere Solutions, Inc. - SQL Anywhere 12.0.0 |