you'd have to provide more information, preferably a test-case.

issue 3 looks like you have multiple machines accessing the same file, and 
those machines do not have synchronised clocks.

Sri Sudha wrote:
> Hi,
>
> In our project we are using H2 DB version : h2-1.1.114. We are using
> h2db to store the active session information, to store the data only
> for 2days and the data will be expire after that.
>
> We are facing multiple issues with h2DB.
>
> Issue 1:       Sequence not found  (Sequence
> SYSTEM_SEQUENCE_39CBE124_6F9A_44A9_981C_7E56D83420B2 not found)
>
> Issue2:  org.h2.jdbc.JdbcSQLException: Unique index or primary key
> violation: SYS_ID ON PUBLIC.SYS(ID)
>
> Issue3: org.h2.jdbc.JdbcSQLException: Error opening database: Lock
> file modification time is in the future; if required please delete the
> file /XXX/XXXXX/XXXX/data/h2/XXXX_session.lock.db manually and retry
>
> From your earlier forum topics I understood that the problem might be
> either DB corrupted or restarting the OS, or need to upgrade h2db  to
> the latest version.
>
> If the issue is really related to upgrade the H2DB, please suggest me
> which version providing the solution for all the above issues. It
> would be more helpful, if you can provide me the root cause for the
> above issues for better understanding.
>
> Thanks,
> Aruna.
>

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