Dbverify (Checks For Corrupt Databases); Ds_Removal - Red Hat 8.1 Configuration And Command Reference

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Chapter 7. Command-Line Scripts
T able 7.7. db2index Options
Option
-n backendInstance
-s includeSuffix
-t attributeName{:indextypes(:mathingrules)}
-T vlvAttributeName

7.3.6. dbverify (Checks for Corrupt Databases)

Verifies the backend database files. If the server crashes because of a corrupted database, this
command can be used to verify the integrity of the different database files to help isolate any problems.
IMPORTANT
Never run dbverify when a modify operation is in progress. T his command calls the
BerkeleyDB utility db_verify and does not perform any locking. T his can lead to data corruption
if the script is run at the same time as a modify. If that occurs, an entry will be recorded in the
error log:
DB ERROR: db_verify: Page 3527: out-of-order key at entry 42
DB ERROR: db_verify: DB->verify: db/mstest2/uid.db4: DB_VERIFY_BAD: Database
verification failed
Secondary index file uid.db4 in db/mstest2 is corrupted.
Please run db2index(.pl) for reindexing.
Run db2index -t uid to avoid rebuilding all of the indexes or export and reimport all of the
databases using db2ldif and ldif2db.
dbverify is a shell script wrapper of verify-db.pl to set the appropriate library path.
Syntax
dbverify [ -a /path/to/database_directory ]
Options
T able 7.8. dbverify Options
Option
-a path
For information on the equivalent Perl script, see
Databases)".

7.3.7. ds_removal

T he ds_rem oval tool removes a single instance of Directory Server. T he server instance usually must
be running when this script is run so that the script can bind to the instance. It is also possible to force
the script to run, which may be necessary if there was an interrupted installation process or the instance
is corrupted or broken so that it cannot run.
When the instance is removed, it is shutdown and all of its configuration files are removed. Certificate
database files, like cert8.db and key3.db, are not removed, so the remaining instance directory is
renamed rem oved.slapd-instance.
Description
Gives the name of the instance to be reindexed.
Gives suffixes to be included or the subtrees to
be included if -n has been used.
Names of the attributes to be reindexed.
Optionally, this can include the index type (eq,
pres, sub, approx) and a matching rule OID.
Gives the names of the VLV attributes to be
reindexed. T he name is the VLV index object's
common name in cn=config.
Description
Gives the path to the database directory. If this
option is not passed with the verify-db.pl
command, then it uses the default database
directory,
/var/lib/dirsrv/slapd-instance_name/db.
Section 7.4.21, "verify-db.pl (Check for Corrupt