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BDB-CXX_APIReference.pdf
(3.64 MB)
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add_data_dir_parameter.html
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apiReference.css
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configuration_reference.html
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db.html
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db_archive.html
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db_checkpoint.html
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db_copy.html
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db_deadlock.html
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db_dump.html
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db_heap_rid.html
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db_hotbackup.html
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db_load.html
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db_log_verify.html
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db_printlog.html
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db_recover.html
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db_replicate.html
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db_site.html
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db_sql_codegen.html
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db_stat.html
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db_tuner.html
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db_upgrade.html
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db_verify.html
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dbassociate.html
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dbassociate_foreign.html
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dbc.html
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dbcclose.html
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dbccmp.html
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dbccount.html
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dbcdel.html
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dbcdup.html
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dbcget.html
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dbcget_priority.html
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dbchannel_close.html
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dbchannel_send_msg.html
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dbchannel_send_request.html
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dbchannel_set_timeout.html
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dbclose.html
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dbcompact.html
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dbcput.html
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dbcreate.html
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dbcset_priority.html
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dbcursor.html
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dbdeadlock.html
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dbdel.html
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dberr.html
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dbexception.html
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dbexists.html
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dbfd.html
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dbget.html
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dbget_bt_minkey.html
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dbget_byteswapped.html
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dbget_cachesize.html
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dbget_create_dir.html
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dbget_dbname.html
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dbget_encrypt_flags.html
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dbget_errfile.html
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dbget_errpfx.html
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dbget_flags.html
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dbget_h_ffactor.html
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dbget_h_nelem.html
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dbget_heap_regionsize.html
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dbget_heapsize.html
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dbget_lk_exclusive.html
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dbget_lorder.html
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dbget_mpf.html
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dbget_msgfile.html
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dbget_multiple.html
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dbget_open_flags.html
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dbget_pagesize.html
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dbget_partition_callback.html
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dbget_partition_dirs.html
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dbget_partition_keys.html
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dbget_priority.html
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dbget_q_extentsize.html
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dbget_re_delim.html
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dbget_re_len.html
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dbget_re_pad.html
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dbget_re_source.html
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dbget_transactional.html
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dbget_type.html
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dbgetenv.html
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dbjoin.html
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dbkey_range.html
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dblocknotgranted.html
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dbmemory.html
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dbmultiplebuilder.html
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dbmultipledatabuilder.html
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dbmultipledataiterator.html
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dbmultipleiterator.html
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dbmultiplekeydatabuilder.html
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dbmultiplekeydataiterator.html
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dbmultiplerecnodatabuilder.html
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dbmultiplerecnodataiterator.html
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dbopen.html
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dbput.html
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dbremove.html
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dbrename.html
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dbrephandledead.html
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dbrunrecovery.html
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dbset_alloc.html
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dbset_append_recno.html
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dbset_bt_compare.html
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dbset_bt_compress.html
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dbset_bt_minkey.html
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dbset_bt_prefix.html
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dbset_cachesize.html
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dbset_create_dir.html
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dbset_dup_compare.html
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dbset_encrypt.html
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dbset_errcall.html
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dbset_errfile.html
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dbset_error_stream.html
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dbset_errpfx.html
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dbset_feedback.html
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dbset_flags.html
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dbset_h_compare.html
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dbset_h_ffactor.html
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dbset_h_hash.html
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dbset_h_nelem.html
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dbset_heap_regionsize.html
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dbset_heapsize.html
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dbset_lk_exclusive.html
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dbset_lorder.html
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dbset_message_stream.html
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dbset_msgcall.html
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dbset_msgfile.html
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dbset_pagesize.html
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dbset_partition.html
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dbset_partition_dirs.html
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dbset_priority.html
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dbset_q_extentsize.html
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dbset_re_delim.html
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dbset_re_len.html
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dbset_re_pad.html
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dbset_re_source.html
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dbsite_close.html
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dbsite_get_address.html
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dbsite_get_config.html
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dbsite_get_eid.html
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dbsite_remove.html
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dbsite_set_config.html
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dbsort_multiple.html
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dbsql.html
(8.63 KB)
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dbstat.html
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dbstat_print.html
(6.38 KB)
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dbsync.html
(8.45 KB)
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dbt.html
(28.7 KB)
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dbtruncate.html
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dbupgrade.html
(10.1 KB)
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dbverify.html
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env.html
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envadd_data_dir.html
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envbackup.html
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envcdsgroup_begin.html
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envclose.html
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envcreate.html
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envdbbackup.html
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envdbremove.html
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envdbrename.html
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enverr.html
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envevent_notify.html
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envfailchk.html
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envfileid_reset.html
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envfullversion.html
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envget_backup_callbacks.html
(6.85 KB)
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envget_backup_config.html
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envget_cache_max.html
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envget_cachesize.html
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envget_create_dir.html
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envget_data_dirs.html
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envget_encrypt_flags.html
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envget_errfile.html
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envget_errpfx.html
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envget_flags.html
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envget_home.html
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envget_intermediate_dir_mode.html
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envget_lg_bsize.html
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envget_lg_dir.html
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envget_lg_filemode.html
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envget_lg_max.html
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envget_lg_regionmax.html
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envget_lk_conflicts.html
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envget_lk_detect.html
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envget_lk_max_lockers.html
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envget_lk_max_locks.html
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envget_lk_max_objects.html
(6.43 KB)
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envget_lk_partitions.html
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envget_lk_priority.html
(6.02 KB)
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envget_lk_tablesize.html
(5.15 KB)
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envget_memory_init.html
(8.57 KB)
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envget_memory_max.html
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envget_metadata_dir.html
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envget_mp_mmapsize.html
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envget_mp_mtxcount.html
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envget_mp_pagesize.html
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envget_mp_tablesize.html
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envget_msgfile.html
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envget_open_flags.html
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envget_shm_key.html
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envget_thread_count.html
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envget_timeout.html
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envget_tmp_dir.html
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envget_tx_max.html
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envget_tx_timestamp.html
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envget_verbose.html
(10.68 KB)
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envlog_get_config.html
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envlog_set_config.html
(14.43 KB)
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envlog_verify.html
(12.24 KB)
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envlsn_reset.html
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envopen.html
(34.69 KB)
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envremove.html
(12.99 KB)
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envset_alloc.html
(10.2 KB)
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envset_app_dispatch.html
(12.17 KB)
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envset_backup_callbacks.html
(13.48 KB)
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envset_backup_config.html
(9.3 KB)
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envset_cache_max.html
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envset_cachesize.html
(10.24 KB)
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envset_create_dir.html
(7.52 KB)
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envset_data_dir.html
(9.01 KB)
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envset_encrypt.html
(7.94 KB)
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envset_errcall.html
(8.51 KB)
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envset_errfile.html
(9.15 KB)
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envset_error_stream.html
(7.16 KB)
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envset_errpfx.html
(5.26 KB)
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envset_feedback.html
(7.41 KB)
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envset_flags.html
(35.63 KB)
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envset_intermediate_dir_mode.html
(10.08 KB)
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envset_isalive.html
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envset_lg_bsize.html
(8.55 KB)
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envset_lg_dir.html
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envset_lg_filemode.html
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envset_lg_max.html
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envset_lg_regionmax.html
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envset_lk_conflicts.html
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envset_lk_detect.html
(10.5 KB)
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envset_lk_max_lockers.html
(8.28 KB)
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envset_lk_max_locks.html
(8.34 KB)
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envset_lk_max_objects.html
(8.39 KB)
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envset_lk_partitions.html
(7.93 KB)
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envset_lk_priority.html
(6.67 KB)
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envset_lk_tablesize.html
(7.65 KB)
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envset_memory_init.html
(11.53 KB)
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envset_memory_max.html
(8.11 KB)
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envset_message_stream.html
(6.54 KB)
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envset_metadata_dir.html
(6.21 KB)
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envset_mp_mmapsize.html
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envset_mp_mtxcount.html
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envset_mp_pagesize.html
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envset_mp_tablesize.html
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envset_msgcall.html
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envset_msgfile.html
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envset_shm_key.html
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envset_thread_count.html
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envset_thread_id.html
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envset_thread_id_string.html
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envset_timeout.html
(12.37 KB)
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envset_tmp_dir.html
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envset_tx_max.html
(8.39 KB)
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envset_tx_timestamp.html
(7.21 KB)
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envset_verbose.html
(13 KB)
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envstat.html
(6.34 KB)
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envstrerror.html
(4.91 KB)
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envtxn_applied.html
(10.25 KB)
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envversion.html
(5.59 KB)
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frame_index.html
(2.87 KB)
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frame_main.html
(627 B)
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index.html
(96.5 KB)
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introduction.html
(4.03 KB)
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lock.html
(9.5 KB)
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lockdetect.html
(9.85 KB)
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lockget.html
(14.24 KB)
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lockid.html
(5.12 KB)
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lockid_free.html
(5.79 KB)
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lockput.html
(5.63 KB)
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lockstat.html
(21.84 KB)
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lockstat_print.html
(7.76 KB)
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lockvec.html
(21.84 KB)
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log_set_config_parameter.html
(4.1 KB)
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logarchive.html
(11.83 KB)
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logc.html
(3.17 KB)
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logcclose.html
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logcget.html
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logcompare.html
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logcursor.html
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logfile.html
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logflush.html
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logprintf.html
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logput.html
(8.65 KB)
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logstat.html
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logstat_print.html
(6.18 KB)
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lsn.html
(8.6 KB)
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memp.html
(14.24 KB)
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mempfclose.html
(5.63 KB)
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mempfcreate.html
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mempfget.html
(15.88 KB)
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mempfopen.html
(13.58 KB)
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mempfsync.html
(4.21 KB)
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mempget_clear_len.html
(4.87 KB)
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mempget_fileid.html
(4.52 KB)
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mempget_flags.html
(4.96 KB)
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mempget_ftype.html
(5.2 KB)
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mempget_lsn_offset.html
(5.26 KB)
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mempget_maxsize.html
(5.71 KB)
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mempget_mp_max_openfd.html
(5.28 KB)
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mempget_mp_max_write.html
(5.96 KB)
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mempget_pgcookie.html
(5.34 KB)
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mempget_priority.html
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mempput.html
(8.43 KB)
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mempregister.html
(9.12 KB)
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mempset_clear_len.html
(6.2 KB)
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mempset_fileid.html
(7.54 KB)
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mempset_flags.html
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mempset_ftype.html
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mempset_lsn_offset.html
(5.97 KB)
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mempset_maxsize.html
(6.35 KB)
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mempset_mp_max_openfd.html
(6.92 KB)
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mempset_mp_max_write.html
(7.71 KB)
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mempset_pgcookie.html
(5.95 KB)
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mempset_priority.html
(7.33 KB)
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mempstat.html
(23.67 KB)
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mempstat_print.html
(6.39 KB)
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mempsync.html
(5.47 KB)
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memptrickle.html
(6.64 KB)
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moreinfo.html
(7.39 KB)
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mutex.html
(6.72 KB)
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mutex_set_align_parameter.html
(3.46 KB)
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mutex_set_increment_parameter.html
(3.44 KB)
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mutex_set_max_parameter.html
(3.6 KB)
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mutex_set_tas_spins_parameter.html
(3.29 KB)
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mutexalloc.html
(7.81 KB)
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mutexfree.html
(5.95 KB)
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mutexget_align.html
(4.73 KB)
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mutexget_increment.html
(4.8 KB)
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mutexget_init.html
(4.87 KB)
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mutexget_max.html
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mutexget_tas_spins.html
(4.92 KB)
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mutexlock.html
(5.87 KB)
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mutexset_align.html
(7.4 KB)
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mutexset_increment.html
(7.67 KB)
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mutexset_init.html
(7.37 KB)
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mutexset_max.html
(8 KB)
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mutexset_tas_spins.html
(6.92 KB)
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mutexstat.html
(10.91 KB)
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mutexstat_print.html
(5.88 KB)
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mutexunlock.html
(5.74 KB)
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preface.html
(4.49 KB)
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rep.html
(15.03 KB)
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rep_set_clockskew_parameter.html
(3.51 KB)
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rep_set_config_parameter.html
(4.16 KB)
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rep_set_limit_parameter.html
(3.47 KB)
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rep_set_nsites_parameter.html
(3.39 KB)
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rep_set_priority_parameter.html
(3.43 KB)
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rep_set_request_parameter.html
(4.08 KB)
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rep_set_timeout_parameter.html
(3.9 KB)
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repclockskew.html
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repconfig.html
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repelect.html
(14.74 KB)
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repget_clockskew.html
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repget_config.html
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repget_limit.html
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repget_nsites.html
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repget_priority.html
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repget_request.html
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repget_timeout.html
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repmessage.html
(15.49 KB)
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repmgr_channel.html
(8.34 KB)
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repmgr_local_site.html
(6.32 KB)
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repmgr_msg_dispatch.html
(10.65 KB)
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repmgr_set_ack_policy_parameter.html
(4.06 KB)
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repmgr_site.html
(7.63 KB)
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repmgr_site_by_eid.html
(6.85 KB)
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repmgr_site_parameter.html
(6.64 KB)
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repmgrget_ack_policy.html
(5.25 KB)
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repmgrset_ack_policy.html
(12.03 KB)
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repmgrsite_list.html
(8.48 KB)
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repmgrstart.html
(13.6 KB)
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repmgrstat.html
(10.43 KB)
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repmgrstat_print.html
(7.17 KB)
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repnsites.html
(7.74 KB)
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reppriority.html
(7.23 KB)
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repset_limit.html
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repset_request.html
(8.78 KB)
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repset_timeout.html
(14.47 KB)
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repstart.html
(9.64 KB)
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repstat.html
(26 KB)
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repstat_print.html
(7.09 KB)
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repsync.html
(7.17 KB)
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reptransport.html
(14.12 KB)
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seq.html
(7.79 KB)
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seqclose.html
(5.81 KB)
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seqcreate.html
(7.55 KB)
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seqget.html
(9.64 KB)
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seqget_cachesize.html
(4.74 KB)
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seqget_dbp.html
(4.76 KB)
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seqget_flags.html
(4.71 KB)
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seqget_key.html
(4.71 KB)
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seqget_range.html
(5.27 KB)
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seqinitial_value.html
(5.75 KB)
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seqopen.html
(8.57 KB)
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seqremove.html
(7.82 KB)
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seqset_cachesize.html
(5.72 KB)
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seqset_flags.html
(7.01 KB)
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seqset_range.html
(6.16 KB)
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seqstat.html
(9.16 KB)
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seqstat_print.html
(5.12 KB)
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set_cache_max_parameter.html
(4.02 KB)
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set_cachesize_parameter.html
(6.47 KB)
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set_create_dir_parameter.html
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Editing: envset_lg_dir.html
<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>DbEnv::set_lg_dir()</title> <link rel="stylesheet" href="apiReference.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB C++ API Reference" /> <link rel="up" href="lsn.html" title="ChapterΒ 8.Β The DbLsn Handle" /> <link rel="prev" href="envset_lg_bsize.html" title="DbEnv::set_lg_bsize()" /> <link rel="next" href="envset_lg_filemode.html" title="DbEnv::set_lg_filemode()" /> </head> <body> <div xmlns="" class="navheader"> <div class="libver"> <p>Library Version 11.2.5.3</p> </div> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">DbEnv::set_lg_dir()</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="envset_lg_bsize.html">Prev</a>Β </td> <th width="60%" align="center">ChapterΒ 8.Β The DbLsn Handle </th> <td width="20%" align="right">Β <a accesskey="n" href="envset_lg_filemode.html">Next</a></td> </tr> </table> <hr /> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="envset_lg_dir"></a>DbEnv::set_lg_dir()</h2> </div> </div> </div> <pre class="programlisting">#include <db_cxx.h> int DbEnv::set_lg_dir(const char *dir); </pre> <p> The path of a directory to be used as the location of logging files. Log files created by the Log Manager subsystem will be created in this directory. </p> <p> If no logging directory is specified, log files are created in the environment home directory. See <a href="../../programmer_reference/env_naming.html" class="olink">Berkeley DB File Naming</a> for more information. </p> <p> For the greatest degree of recoverability from system or application failure, database files and log files should be located on separate physical devices. </p> <p> The database environment's logging directory may also be configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax of the entry in that file is a single line with the string "set_lg_dir", one or more whitespace characters, and the directory name. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read when the database environment is opened, it will silently overrule configuration done before that time. Note that if you use this method for your application, and you also want to use the <a class="xref" href="db_recover.html" title="db_recover">db_recover</a>, <a class="xref" href="db_printlog.html" title="db_printlog">db_printlog</a>, <a class="xref" href="db_archive.html" title="db_archive">db_archive</a>, or <a class="xref" href="db_log_verify.html" title="db_log_verify">db_log_verify</a> utilities, then you should set create a <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file and set the "set_lg_dir" parameter in it. </p> <p> The <code class="methodname">DbEnv::set_lg_dir()</code> method configures operations performed using the specified <a class="link" href="env.html" title="ChapterΒ 5.Β The DbEnv Handle">DbEnv</a> handle, not all operations performed on the underlying database environment. </p> <p> The <code class="methodname">DbEnv::set_lg_dir()</code> method may not be called after the <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method is called. If the database environment already exists when <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> is called, the information specified to <code class="methodname">DbEnv::set_lg_dir()</code> must be consistent with the existing environment or corruption can occur. </p> <p> The <code class="methodname">DbEnv::set_lg_dir()</code> <span> <span> 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. </span> </span> </p> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp8475096"></a>Parameters</h3> </div> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp8474448"></a>dir</h4> </div> </div> </div> <p> The <span class="bold"><strong>dir</strong></span> parameter is the directory used to store the logging files. This directory must currently exist at environment open time. </p> <p> When using a Unicode build on Windows (the default), the <span class="bold"><strong>dir</strong></span> argument will be interpreted as a UTF-8 string, which is equivalent to ASCII for Latin characters. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp8453704"></a>Errors</h3> </div> </div> </div> <p> The <code class="methodname">DbEnv::set_lg_dir()</code> <span> <span> method may fail and throw a <a class="link" href="dbexception.html" title="ChapterΒ 6.Β The DbException Class">DbException</a> exception, encapsulating one of the following non-zero errors, or return one of the following non-zero errors: </span> </span> </p> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp8486944"></a>EINVAL</h4> </div> </div> </div> <p> If the method was called after <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> was called; or if an invalid flag value or parameter was specified. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp8488272"></a>Class</h3> </div> </div> </div> <p> <a class="link" href="env.html" title="ChapterΒ 5.Β The DbEnv Handle">DbEnv</a>, <a class="link" href="logc.html" title="The DbLogc Handle">DbLogc</a>, <a class="link" href="lsn.html" title="ChapterΒ 8.Β The DbLsn Handle">DbLsn</a> </p> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp8475960"></a>See Also</h3> </div> </div> </div> <p> <a class="xref" href="lsn.html#loglist" title="Logging Subsystem and Related Methods">Logging Subsystem and Related Methods</a> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="envset_lg_bsize.html">Prev</a>Β </td> <td width="20%" align="center"> <a accesskey="u" href="lsn.html">Up</a> </td> <td width="40%" align="right">Β <a accesskey="n" href="envset_lg_filemode.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">DbEnv::set_lg_bsize()Β </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top">Β DbEnv::set_lg_filemode()</td> </tr> </table> </div> </body> </html>
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