utilities.so

berkeley db 4.6.21的源码。berkeley db是一个简单的数据库管理系统

m4_comment([$Id: utilities.so,v 10.25 2001/03/05 19:15:07 bostic Exp $])

m4_ref_title(Architecture,
    Supporting utilities, @utilities, arch/script, env/intro)

m4_p([dnl
The following are the standalone utilities that provide supporting
functionality for the m4_db environment:])

m4_tagbegin

m4_tag(m4_ref(berkeley_db_svc), [dnl
The m4_ref(berkeley_db_svc) utility is the m4_db RPC server that
provides standard server functionality for client applications.])

m4_tag(m4_ref(db_archive), [dnl
The m4_ref(db_archive) utility supports database backup and archival,
and log file administration.  It facilitates log reclamation and the
creation of database snapshots.  Generally, some form of log archival
must be done if a database environment has been configured for logging
or transactions.])

m4_tag(m4_ref(db_checkpoint), [dnl
The m4_ref(db_checkpoint) utility runs as a daemon process, monitoring
the database log and periodically issuing checkpoints.  It facilitates
log reclamation and the creation of database snapshots.  Generally, some
form of database checkpointing must be done if a database environment has
been configured for transactions.])

m4_tag(m4_ref(db_deadlock), [dnl
The m4_ref(db_deadlock) utility runs as a daemon process, periodically
traversing the database lock structures and aborting transactions when it
detects a deadlock.  Generally, some form of deadlock detection must be
done if a database environment has been configured for locking.])

m4_tag(m4_ref(db_dump), [dnl
The m4_ref(db_dump) utility writes a copy of the database to a flat-text
file in a portable format.])

m4_tag(m4_ref(db_load), [dnl
The m4_ref(db_load) utility reads the flat-text file produced by
m4_ref(db_dump) and loads it into a database file.])

m4_tag(m4_ref(db_printlog), [dnl
The m4_ref(db_printlog) utility displays the contents of m4_db log files
in a human-readable and parsable format.])

m4_tag(m4_ref(db_recover), [dnl
The m4_ref(db_recover) utility runs after an unexpected m4_db or system
failure to restore the database to a consistent state.  Generally, some
form of database recovery must be done if databases are being modified.])

m4_tag(m4_ref(db_stat)  , [dnl
The m4_ref(db_stat) utility displays statistics for databases and database
environments.])

m4_tag(m4_ref(db_upgrade), [dnl
The m4_ref(db_upgrade) utility provides a command-line interface for
upgrading underlying database formats.])

m4_tag(m4_ref(db_verify), [dnl
The m4_ref(db_verify) utility provides a command-line interface for
verifying the database format.])

m4_tagend

m4_p([dnl
All of the functionality implemented for these utilities is also available
as part of the standard m4_db API.  This means that threaded applications
can easily create a thread that calls the same m4_db functions as do the
utilities.  This often simplifies an application environment by removing
the necessity for multiple processes to negotiate database and database
environment creation and shut down.])

m4_page_footer