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OVDB_INIT(8)              InterNetNews Documentation              OVDB_INIT(8)


NAME

       ovdb_init - Prepare ovdb database for use


SYNOPSIS

       ovdb_init ["-u"|"-r"]


DESCRIPTION

       This command must be run before any other process can access the
       overview database.  It performs the following steps:

       1.  Creates the database environment, if necessary

       2.  If the database is idle (and if the "-u" option is not specified),
           it performs a normal recovery.  The recovery will remove stale
           locks, recreate the memory pool cache, and repair any damage caused
           by a system crash or improper shutdown.

       3.  If the "-u" option is specified, it performs any necessary upgrades
           to the database.  See the UPGRADING section below.

       4.  Starts the DB housekeeping processes (ovdb_monitor) if they're not
           already running. (Unless the "-r" option is specified).

       5.  Starts the ovdb readserver (ovdb_server) processes if readserver in
           ovdb.conf is true, and if they are not already running.  (Unless
           the "-r" option is specified).

       Returns exit status of 0 if all steps were completed successfully.  In
       the event of an error, messages are written to syslog and/or stderr.

       If a recovery was attempted but it failed, the database may be damaged
       beyond repair, requiring a rebuild with makehistory(8).

       This command is normally invoked automatically by rc.news(8).

       It is OK to run this command multiple times.


OPTIONS

       "-r"
           Perform recovery only.  "ovdb_monitor" is not started.

       "-u"
           Perform any needed upgrades.  Recovery is not attempted.
           "ovdb_monitor" is started if the upgrade succeeded.


UPGRADING

       There are two situations in which the database will need to be
       upgraded:

       o   You upgrade the Berkeley DB library to a newer version, for example
           from 2.7.7 to 3.1.17.  In this case, the Berkeley DB db->upgrade()
           method is used.

       o   You upgrade ovdb to a newer major version; i.e., ovdb-1.0 to
           ovdb-2.0.

       In both of these cases, the database is upgraded in-place; and the
       upgrade can not be undone.  Do not interrupt the upgrade process once
       it has started, because there is a risk of irrepairable corruption.
       The upgrade may take several minutes to complete.  If an upgrade does
       get interrupted, try running the upgrade again.

       Here's an example procedure to upgrade a database created with
       Berkeley DB 2.7.7 to use Berkeley DB 3.1.17:

       1.  Build and install the Berkeley DB 3.1.17;

       2.  Run configure in the INN source tree and make sure it picks up the
           right Berkeley DB directory (e.g., /usr/local/BerkeleyDB.3.1);

       3.  Do a "make";

       4.  Shut down INN (e.g., with "rc.news stop") and be sure to kill all
           instances of nnrpd as well;

       5.  Do a "make update" to install the new binaries;

       6.  Run "ovdb_init -u" as the news user;

       7.  Start INN with "rc.news".

       It is OK to specify "-u" even if no upgrades are needed.


HISTORY

       Written by Heath Kehoe <hakehoe@avalon.net> for InterNetNews.

       $Id: ovdb_init.pod 9765 2014-12-07 21:07:34Z iulius $


SEE ALSO

       ovdb(5), makehistory(8)

INN 2.6.0                         2015-09-12                      OVDB_INIT(8)

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