1OVDB_INIT(8)              InterNetNews Documentation              OVDB_INIT(8)
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NAME

6       ovdb_init - Prepare ovdb database for use
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SYNOPSIS

9       ovdb_init [-r|-u]
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DESCRIPTION

12       This command must be run before any other process can access the
13       overview database.  ovdb_init is normally invoked automatically by
14       rc.news when starting the news system.
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16       ovdb_init performs the following steps:
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18       1.  Creates the database environment, if necessary.
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20       2.  If the database is idle (and if the -u option is not specified), it
21           performs a normal recovery.  The recovery will remove stale locks,
22           recreate the memory pool cache, and repair any damage caused by a
23           system crash or improper shutdown.
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25       3.  If the -u option is specified, it performs any necessary upgrades
26           to the database.  See the "UPGRADING" section below.
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28       4.  Starts the database housekeeping processes (ovdb_monitor) if they
29           are not already running.  (Unless the -r option is specified.)
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31       5.  Starts the ovdb readserver processes (ovdb_server) if readserver in
32           ovdb.conf is true, and if they are not already running.  (Unless
33           the -r option is specified.)
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35       Returns exit status of 0 if all steps were completed successfully.  In
36       the event of an error, messages are written to syslog and/or stderr.
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38       If a recovery was attempted but failed, the database may be damaged
39       beyond repair, requiring a rebuild with makehistory.
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41       This command can be run multiple times.
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OPTIONS

44       -r  Perform recovery only.  ovdb_monitor is not started.
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46       -u  Perform any needed upgrades.  Recovery is not attempted.
47           ovdb_monitor is started if the upgrade succeeded.
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49           This option can be used even if no upgrades are needed.
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UPGRADING

52       There are two situations in which the database will need to be
53       upgraded:
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55       •   You upgrade the Berkeley DB library to a newer version, for example
56           from 2.7.7 to 3.1.17.  In this case, the Berkeley DB
57           "db->upgrade()" method is used.
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59       •   You upgrade ovdb to a newer major version; i.e., ovdb-1.0 (shipped
60           with INN 2.3.0 up to INN 2.3.5) to ovdb-2.0 (since INN 2.4.0).
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62       In both of these cases, the database is upgraded in-place; and the
63       upgrade cannot be undone.  Do not interrupt the upgrade process once it
64       has started, because there is a risk of irreparable corruption.  The
65       upgrade may take several minutes to complete.  If an upgrade does get
66       interrupted, try running the upgrade again.
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68       Here's an example procedure to upgrade a database created with
69       Berkeley DB 2.7.7 to use Berkeley DB 3.1.17:
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71       1.  Build and install the Berkeley DB 3.1.17 version;
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73       2.  Run configure in the INN source tree and make sure it picks up the
74           right Berkeley DB directory (e.g., /usr/local/BerkeleyDB.3.1);
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76       3.  Do a "make";
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78       4.  Shut down INN (e.g., with "rc.news stop") and be sure to kill all
79           instances of nnrpd as well;
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81       5.  Do a "make update" to install the new binaries;
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83       6.  Run "ovdb_init -u" as the news user;
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85       7.  Start INN with the "rc.news" command.
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HISTORY

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

91       ovdb(5), makehistory(8), rc.news(8).
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95INN 2.7.1                         2023-03-07                      OVDB_INIT(8)
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