I got this error

INFO: Successfully released change log lock
Exception in thread "main" org.opennms.core.schema.MigrationException: unable 
to update the database
        at org.opennms.core.schema.Migrator.migrate(Migrator.java:72)
        at org.opennms.install.Installer.install(Installer.java:284)
        at org.opennms.install.Installer.main(Installer.java:860)
Caused by: liquibase.exception.MigrationFailedException: Migration failed for 
change set sequences.xml::opennmsnxtid::rangerrick:
     Reason: liquibase.exception.JDBCException: Error executing SQL CREATE 
SEQUENCE opennmsnxtid:
          Caused By: Error executing SQL CREATE SEQUENCE opennmsnxtid:
          Caused By: ERROR: relation "opennmsnxtid" already exists
        at liquibase.ChangeSet.execute(ChangeSet.java:238)
        at liquibase.parser.visitor.UpdateVisitor.visit(UpdateVisitor.java:26)
        at liquibase.parser.ChangeLogIterator.run(ChangeLogIterator.java:41)
        at liquibase.Liquibase.update(Liquibase.java:112)
        at org.opennms.core.schema.Migrator.migrate(Migrator.java:69)
        ... 2 more
Caused by: liquibase.exception.JDBCException: Error executing SQL CREATE 
SEQUENCE opennmsnxtid
        at 
liquibase.database.template.JdbcTemplate.execute(JdbcTemplate.java:56)
        at 
liquibase.database.template.JdbcTemplate.execute(JdbcTemplate.java:87)
        at liquibase.change.AbstractChange.execute(AbstractChange.java:251)
        at 
liquibase.change.AbstractChange.executeStatements(AbstractChange.java:97)
        at liquibase.ChangeSet.execute(ChangeSet.java:214)
        ... 6 more
Caused by: org.postgresql.util.PSQLException: ERROR: relation "opennmsnxtid" 
already exists
        at 
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1525)
        at 
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1309)
        at 
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:188)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:452)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:340)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:332)
        at 
liquibase.database.template.JdbcTemplate$1ExecuteStatementCallback.doInStatement(JdbcTemplate.java:79)
        at 
liquibase.database.template.JdbcTemplate.execute(JdbcTemplate.java:49)
        ... 10 more

-----Original Message-----
From: Benjamin Reed [mailto:ran...@opennms.org]
Sent: Friday, May 29, 2009 1:39 PM
To: General OpenNMS Discussion; OpenNMS Code Development and Bugs
Subject: [opennms-devel] WARNING: database volatility in 1.7.x snapshots 
starting tomorrow -- please help test!!

So I've finished the work on transitioning to liquibase for revisions to the 
database.

I believe I've found all of the bugs (both on upgrading, and fresh
install) but it's a rather large change to the way we create our database 
schema.  Be forewarned, if you're playing with OpenNMS 1.7.x snapshots, be 
prepared to back up your database first before upgrading to a snapshot of 
revision 13498 or higher.

That said, I would really appreciate feedback from testers, letting me know if 
they ran into any issues after the update.

Thanks!

--
Benjamin Reed
The OpenNMS Group
http://www.opennms.org/



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