DbEnv::set_lk_detect
DbEnv::set_lk_detect |
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#include <db_cxx.h>int DbEnv::set_lk_detect(u_int32_t detect);
Set if the deadlock detector is to be run whenever a lock conflict occurs, and specify which transaction should be aborted in the case of a deadlock. The specified value must be one of the following list:
The DbEnv::set_lk_detect interface may be used only to configure Berkeley DB before the DbEnv::open interface is called.
The DbEnv::set_lk_detect 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.
The database environment's deadlock detector configuration may also be set using the environment's DB_CONFIG file. The syntax of the entry in that file is a single line with the string "set_lk_detect", one or more whitespace characters, and the interface detect argument as a string; for example, "set_lk_detect DB_LOCK_OLDEST". Because the DB_CONFIG file is read when the database environment is opened, it will silently overrule configuration done before that time.
The DbEnv::set_lk_detect method may fail and throw an exception or return a non-zero error for the following conditions:
Called after DbEnv::open was called.
The DbEnv::set_lk_detect method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbEnv::set_lk_detect method may fail and either return DB_RUNRECOVERY or throw an exception encapsulating DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.
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Copyright Sleepycat Software
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Set if the deadlock detector is to be run whenever a lock conflict occurs, and specify what lock request(s) should be rejected. As transactions acquire locks on behalf of a single locker ID, rejecting a lock request associated with a transaction normally requires the transaction be aborted. The specified value must be one of the following list: d32 10 a41 14
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The DbEnv::set_lk_detect method configures a database environment, not only operations performed using the specified DbEnv handle.
The DbEnv::set_lk_detect interface may not be called after the DbEnv::open interface is called. If the database environment already exists when DbEnv::open is called, the information specified to DbEnv::set_lk_detect must be consistent with the existing environment or an error will be returned. d68 4 a71 4 If a catastrophic error has occurred, the DbEnv::set_lk_detect method may fail and either return DB_RUNRECOVERY or throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way. d73 1 a73 1 DbEnv, DbLock d75 13 a87 1 Locking Subsystem and Related Methods @ 1.1.1.4 log @Import: RPM 4.1 @ text @d1 2 a2 2 d4 1 d51 8 a58 2
The DbEnv::set_lk_detect interface may be used only to configure Berkeley DB before the DbEnv::open interface is called. d75 4 a78 4 If a catastrophic error has occurred, the DbEnv::set_lk_detect method may fail and either return DB_RUNRECOVERY or throw an exception encapsulating DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way. d80 1 a80 1 DbEnv, DbLock d82 1 a82 13 DbEnv::set_lk_conflicts, DbEnv::set_lk_detect, DbEnv::set_lk_max_lockers, DbEnv::set_lk_max_locks, DbEnv::set_lk_max_objects, DbEnv::lock_detect, DbEnv::lock_get, DbEnv::lock_id, DbEnv::lock_id_free, DbEnv::lock_put, DbEnv::lock_stat, and DbEnv::lock_vec. @ 1.1.1.5 log @Import: RPM 4.1.1 @ text @d1 2 a2 2 a3 1 d50 2 a51 8
The DbEnv::set_lk_detect method configures a database environment, not only operations performed using the specified DbEnv handle.
The DbEnv::set_lk_detect interface may not be called after the DbEnv::open interface is called. If the database environment already exists when DbEnv::open is called, the information specified to DbEnv::set_lk_detect must be consistent with the existing environment or an error will be returned. d68 4 a71 4 If a catastrophic error has occurred, the DbEnv::set_lk_detect method may fail and either return DB_RUNRECOVERY or throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way. d73 1 a73 1 DbEnv, DbLock d75 13 a87 1 Locking Subsystem and Related Methods @