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Berkeley DB: DbEnv::rep_set_priority
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DbEnv::rep_set_priority
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#include <db_cxx.h>
int
DbEnv::rep_set_priority(u_int32_t priority);
int
DbEnv::rep_get_priority(u_int32_t *priorityp);
Description: DbEnv::rep_set_priority
The DbEnv::rep_set_priority method specifies the database environment's
priority in replication group elections. A special value of
0 indicates that this environment cannot be a replication
group master.
The database environment's replication subsystem may also be configured using the
environment's DB_CONFIG file. The syntax of the entry in that
file is a single line with the string "rep_set_priority", one or more whitespace
characters, and the priority of this site.
For example, "rep_set_priority 1" sets the priority of this site to 1.
Because the DB_CONFIG file is read when the database environment
is opened, it will silently overrule configuration done before that
time.
The DbEnv::rep_set_priority method configures a database environment, not only operations
performed using the specified DbEnv handle.
The DbEnv::rep_set_priority method may be called at any time during the life of the
application.
The DbEnv::rep_set_priority method
either returns a non-zero error value
or throws an exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
Parameters
priority- The priority of this database environment in the replication group. The
priority must be a non-zero integer, or 0 if this environment cannot be
a replication group master. (See Replication environment priorities for more information).
Description: DbEnv::rep_get_priority
The DbEnv::rep_get_priority method returns the database environment priority.
The DbEnv::rep_get_priority method may be called at any time during the life of the
application.
The DbEnv::rep_get_priority method
either returns a non-zero error value
or throws an exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
Parameters
priorityp- The DbEnv::rep_get_priority method returns the
database environment priority in priorityp.
Class
DbEnv
See Also
Replication and Related Methods
Copyright (c) 1996,2008 Oracle. All rights reserved.