DbEnv::set_verbose

#include <db_cxx.h> int DbEnv::set_verbose(u_int32_t which, int onoff); Description The DbEnv::set_verbose method turns additional informational and debugging messages in the Berkeley DB message output on and off. If onoff is set to non-zero, the additional messages are output. The which parameter must be set to one of the following values: DB_VERB_CHKPOINT Display checkpoint location information when searching the log for checkpoints. DB_VERB_DEADLOCK Display additional information when doing deadlock detection. DB_VERB_RECOVERY Display additional information when performing recovery. DB_VERB_REPLICATION Display additional information when processing replication messages. DB_VERB_WAITSFOR Display the waits-for table when doing deadlock detection. The DbEnv::set_verbose interface may be used to configure Berkeley DB at any time during the life of the application. The DbEnv::set_verbose 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 verbosity 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_verbose", one or more whitespace characters, and the interface which argument as a string; for example, "set_verbose DB_VERB_CHKPOINT". Because the DB_CONFIG file is read when the database environment is opened, it will silently overrule configuration done before that time. Errors The DbEnv::set_verbose method may fail and throw an exception or return a non-zero error for the following conditions: EINVAL An invalid flag value or parameter was specified. The DbEnv::set_verbose 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_verbose 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. Class DbEnv See Also DbEnv::close, DbEnv::err, DbEnv::errx DbEnv::open, DbEnv::remove, DbEnv::set_alloc, DbEnv::set_cachesize, DbEnv::set_data_dir, DbEnv::set_errcall, DbEnv::set_errfile, DbEnv::set_error_stream, DbEnv::set_errpfx, DbEnv::set_feedback, DbEnv::set_flags, DbEnv::set_paniccall, DbEnv::set_recovery_init, DbEnv::set_rpc_server, DbEnv::set_shm_key, DbEnv::set_tas_spins, DbEnv::set_tmp_dir, DbEnv::set_timeout, DbEnv::set_verbose, DbEnv::strerror and DbEnv::version.