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.\"
.IX Title "OVDB_INIT 8"
.TH OVDB_INIT 8 "2008-04-06" "INN 2.4.5" "InterNetNews Documentation"
.SH "NAME"
ovdb_init \- Prepare ovdb database for use
.SH "SYNOPSYS"
.IX Header "SYNOPSYS"
ovdb_init [\f(CW\*(C`\-u\*(C'\fR|\f(CW\*(C`\-r\*(C'\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This command must be run before any other process can access the
overview database.  It performs the following steps:
.IP "1" 4
.IX Item "1"
Creates the database environment, if necessary
.IP "2" 4
.IX Item "2"
If the database is idle (and if the \f(CW\*(C`\-u\*(C'\fR 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.
.IP "3" 4
.IX Item "3"
If the \f(CW\*(C`\-u\*(C'\fR option is specified, it performs any necessary upgrades
to the database.  See the \s-1UPGRADING\s0 section below.
.IP "4" 4
.IX Item "4"
Starts the \s-1DB\s0 housekeeping processes (ovdb_monitor) if they're not
already running. (Unless the \f(CW\*(C`\-r\*(C'\fR option is specified).
.IP "5" 4
.IX Item "5"
Starts the ovdb readserver (ovdb_server) processes if \f(CW\*(C`readserver\*(C'\fR
in \fIovdb.conf\fR is \f(CW\*(C`true\*(C'\fR, and if they're not
already running. (Unless the \f(CW\*(C`\-r\*(C'\fR option is specified).
.PP
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.
.PP
If a recovery was attempted but it failed, the database may be
damaged beyond repair, requiring a rebuild with \fImakehistory\fR\|(8).
.PP
This command is normally invoked automatically by \fIrc.news\fR\|(8).
.PP
It is \s-1OK\s0 to run this command multiple times.
.SH "OPTIONS"
.IX Header "OPTIONS"
.ie n .IP """\-r""" 4
.el .IP "\f(CW\-r\fR" 4
.IX Item "-r"
Perform recovery only.  \f(CW\*(C`ovdb_monitor\*(C'\fR is not started.
.ie n .IP """\-u""" 4
.el .IP "\f(CW\-u\fR" 4
.IX Item "-u"
Perform any needed upgrades.  Recovery is not attempted.
\&\f(CW\*(C`ovdb_monitor\*(C'\fR is started if the upgrade succeeded.
.SH "UPGRADING"
.IX Header "UPGRADING"
There are two situations in which the database will need to be
upgraded:
.IP "\(bu" 4
You upgrade the BerkeleyDB library to a newer version, for example
from 2.7.7 to 3.1.17.  In this case, the BerkeleyDB db\->\fIupgrade()\fR
method is used.
.IP "\(bu" 4
You upgrade ovdb to a newer major version; i.e., ovdb\-1.0 to ovdb\-2.0.
.PP
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.
.PP
Here's an example procedure to upgrade a database created with BerkeleyDB
2.7.7 to use BerkeleyDB 3.1.17:
.IP "1" 4
.IX Item "1"
Build and install the BerkeleyDB 3.1.17
.IP "2" 4
.IX Item "2"
Run configure in the \s-1INN\s0 source tree and make sure it picks up the
right BerkeleyDB directory (e.g., /usr/local/BerkeleyDB.3.1)
.IP "3" 4
.IX Item "3"
Do a \f(CW\*(C`make\*(C'\fR
.IP "4" 4
.IX Item "4"
Shut down \s-1INN\s0 (e.g., with \f(CW\*(C`rc.news stop\*(C'\fR).  Be sure to kill all nnrpds as
well.
.IP "5" 4
.IX Item "5"
Do a \f(CW\*(C`make update\*(C'\fR to install the new binaries.
.IP "6" 4
.IX Item "6"
Run \f(CW\*(C`ovdb_init \-u\*(C'\fR as the news user.
.IP "7" 4
.IX Item "7"
Start \s-1INN\s0 with \f(CW\*(C`rc.news\*(C'\fR
.PP
It is \s-1OK\s0 to specify \f(CW\*(C`\-u\*(C'\fR even if no upgrades are needed.
.SH "HISTORY"
.IX Header "HISTORY"
Written by Heath Kehoe <hakehoe@avalon.net> for InterNetNews.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIovdb\fR\|(5), \fImakehistory\fR\|(8)