Berkeley DB: DbEnv::rep_set_priority
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++

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`

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