ClassNotFoundException when running DbVerify

mgrandi

Running DbVerify results in a ClassNotFoundException when checking the "persist#Meta#com.sleepycat.persist.formats" database, but I don't know why its trying to load the class in the first place? The class does actually exist when the application that uses the BDB JE library is running, but it obviously doesn't exist when I'm just running the DbVerify utility from the jar. Is the database actually corrupted? Am i supposed to pass in classpath arguments to java when running DbVerify so it doesn't get the ClassNotFoundException?

java -cp ~/.m2/repository/com/sleepycat/je/6.4.25/je-6.4.25.jar com.sleepycat.je.util.DbVerify -h /Volumes/mgrandi_256SSD/data/bdb

..... blah blah ....

Verifying database persist#Meta#com.sleepycat.persist.formats

Checking tree for persist#Meta#com.sleepycat.persist.formats

BTree: Composition of btree, types and counts of nodes.

    binCount=1

    binEntriesHistogram=[0-9%: 1]

    binsByLevel=[level 1: count=1]

    deletedLNCount=0

    inCount=1

    insByLevel=[level 2: count=1]

    lnCount=1

    mainTreeMaxDepth=2

BTree: Composition of btree, types and counts of nodes.

com.sleepycat.je.EnvironmentFailureException: (JE 6.4.25) /Volumes/mgrandi_256SSD/data/bdb fetchLN of 0x98632/0x20eb4e parent IN=3 IN class="com".sleepycat.je.tree.BIN lastFullLsn=0x988dd/0x1a192845 lastLoggedLsn=0x988dd/0x1e9bd727 parent.getDirty()=true state=0 java.lang.IllegalStateException: java.lang.ClassNotFoundException: com.sg.security.model.entity.ExchangeHoliday$ExchangeDate LOG_INTEGRITY: Log information is incorrect, problem is likely persistent.

    at com.sleepycat.je.tree.IN.fetchLN(IN.java:2867)

    at com.sleepycat.je.tree.IN.fetchLN(IN.java:2746)

    at com.sleepycat.je.dbi.CursorImpl.getCurrentLN(CursorImpl.java:2287)

    at com.sleepycat.je.dbi.DbTree.getDb(DbTree.java:1627)

    at com.sleepycat.je.dbi.DbTree.getDb(DbTree.java:1536)

    at com.sleepycat.je.Environment.setupDatabase(Environment.java:828)

    at com.sleepycat.je.Environment.openDatabase(Environment.java:658)

    at com.sleepycat.je.util.DbVerify.verify(DbVerify.java:317)

    at com.sleepycat.je.util.DbVerify.main(DbVerify.java:134)

Caused by: java.lang.IllegalStateException: java.lang.ClassNotFoundException: com.sg.security.model.entity.ExchangeHoliday$ExchangeDate

    at com.sleepycat.persist.impl.PersistComparator.initialize(PersistComparator.java:133)

    at com.sleepycat.je.dbi.DatabaseImpl.resetKeyComparator(DatabaseImpl.java:1115)

    at com.sleepycat.je.dbi.DatabaseImpl.initWithEnvironment(DatabaseImpl.java:502)

    at com.sleepycat.je.dbi.DatabaseImpl.setEnvironmentImpl(DatabaseImpl.java:1197)

    at com.sleepycat.je.tree.MapLN.postFetchInit(MapLN.java:260)

    at com.sleepycat.je.tree.IN.fetchLN(IN.java:2842)

    ... 8 more

Caused by: java.lang.ClassNotFoundException: com.sg.security.model.entity.ExchangeHoliday$ExchangeDate

    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

    at java.lang.Class.forName0(Native Method)

    at java.lang.Class.forName(Class.java:348)

    at com.sleepycat.util.ClassResolver.resolveClass(ClassResolver.java:155)

    at com.sleepycat.persist.impl.SimpleCatalog.resolveClass(SimpleCatalog.java:117)

    at com.sleepycat.persist.impl.SimpleCatalog.resolveClass(SimpleCatalog.java:295)

    at com.sleepycat.persist.impl.PersistComparator.initialize(PersistComparator.java:131)

    ... 13 more

Exit status = false

Greybird-Oracle

Hi,

Yes, you have to add the classes/jar that contains com.sg.security.model.entity.ExchangeHoliday$ExchangeDate, and any other key comparators that you use in JE. The key comparators are needed to access and verify the Btree, since they are needed to determine key order.

--mark

Greybird-Oracle

Hi,

Yes, you have to add the classes/jar that contains com.sg.security.model.entity.ExchangeHoliday$ExchangeDate, and any other key comparators that you use in JE. The key comparators are needed to access and verify the Btree, since they are needed to determine key order.

--mark

mgrandi

This should probably be added to the javadoc documentation for DbVerify (DbVerify (Oracle - Berkeley DB Java Edition API)) as it looks scary and might lead people to think that their database is corrupted, or special case verifying the persist#Meta#com.sleepycat.persist.formats and have a specific error message for log verification failures in that database

thanks for the quick response

~Mark (as well!)

Greybird-Oracle

Hi Mark,

You're right, the error message looks scarier than it really is. For now at least, I added a note to the javadoc about this.

Thanks!

--mark