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SQL Anywhere 10.0.1 » SQL Anywhere Server - Programming » Database Tools Interface » DBTools structures

a_backup_db structure Next Page

a_change_log structure


Holds the information needed to perform dblog tasks using the DBTools library.

Syntax
typedef struct a_change_log {
    unsigned short      version;
    const char *        dbname;
    const char *        logname;
    MSG_CALLBACK        errorrtn;
    MSG_CALLBACK        msgrtn;

    a_bit_field         query_only              : 1;
    a_bit_field         quiet                   : 1;
    a_bit_field         _unused1                : 1;
    a_bit_field         change_mirrorname       : 1;
    a_bit_field         change_logname          : 1;
    a_bit_field         ignore_ltm_trunc        : 1;
    a_bit_field         ignore_remote_trunc     : 1;
    a_bit_field         set_generation_number   : 1;
    a_bit_field         ignore_dbsync_trunc     : 1;

    const char *        mirrorname;
    unsigned short      generation_number;
    const char *        _unused2;
    char *              zap_current_offset;
    char *              zap_starting_offset;
    char *              encryption_key;
} a_change_log;
Members
Member Description
version DBTools version number.
dbname Database file name.
logname The name of the transaction log. If set to NULL, there is no log.
errorrtn Callback routine for handling an error message.
msgrtn Callback routine for handling an information message.
query_only If 1, just display the name of the transaction log. If 0, permit changing of the log name.
quiet Operate without printing messages (1), or print messages (0).
change_mirrorname If 1, permit changing of the log mirror name.
change_logname If 1, permit changing of the transaction log name.
ignore_ltm_trunc

When using the Log Transfer Manager, performs the same function as the dbcc settrunc( 'ltm', 'gen_id', n ) Replication Server function.

For information on dbcc, see your Replication Server documentation.

ignore_remote_trunc For SQL Remote. Resets the offset kept for the purposes of the delete_old_logs option, allowing transaction logs to be deleted when they are no longer needed.
set_generation_number When using the Log Transfer Manager, used after a backup is restored to set the generation number.
ignore_dbsync_trunc When using dbmlsync, resets the offset kept for the purposes of the delete_old_logs option, allowing transaction logs to be deleted when they are no longer needed.
mirrorname The new name of the transaction log mirror file.
generation_number The new generation number. Used together with set_generation_number.
zap_current_offset Change the current offset to the specified value. This is for use only in resetting a transaction log after an unload and reload to match dbremote or dbmlsync settings.
zap_starting_offset Change the starting offset to the specified value. This is for use only in resetting a transaction log after an unload and reload to match dbremote or dbmlsync settings.
encryption_key The encryption key for the database file.
See also