Any idea on H2 (Oracle MODE) "Syntax error : SELECT NEXTVAL FROM[*] DUAL"?

Question

I have the following error using H2 (v1.3.154) with Oracle mode :

<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="org.h2.Driver" />
        <property name="url" value="jdbc:h2:mem:testdb;MODE=Oracle" />
        <property name="username" value="sa" />
        <property name="password" value="" />
</bean>

and Oracle dialect for hibernate v3.5.6 :

hibernate.dialect=org.hibernate.dialect.Oracle10gDialect

The error :

Caused by: org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement "SELECT 
SQ_PERSON_ID.NEXTVAL FROM[*] DUAL "; expected "identifier"; SQL statement:
select SQ_PERSON_ID.nextval from dual [42001-154]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:327)
at org.h2.message.DbException.get(DbException.java:167)
at org.h2.message.DbException.getSyntaxError(DbException.java:192)
at org.h2.command.Parser.readColumnIdentifier(Parser.java:2752)
at org.h2.command.Parser.readTermObjectDot(Parser.java:2311)
at org.h2.command.Parser.readTerm(Parser.java:2428)
at org.h2.command.Parser.readFactor(Parser.java:2025)
at org.h2.command.Parser.readSum(Parser.java:2012)
at org.h2.command.Parser.readConcat(Parser.java:1985)
at org.h2.command.Parser.readCondition(Parser.java:1850)
at org.h2.command.Parser.readAnd(Parser.java:1831)
at org.h2.command.Parser.readExpression(Parser.java:1823)
at org.h2.command.Parser.parseSelectSimpleSelectPart(Parser.java:1736)
at org.h2.command.Parser.parseSelectSimple(Parser.java:1768)
at org.h2.command.Parser.parseSelectSub(Parser.java:1663)
at org.h2.command.Parser.parseSelectUnion(Parser.java:1508)
at org.h2.command.Parser.parseSelect(Parser.java:1496)
at org.h2.command.Parser.parsePrepared(Parser.java:401)
at org.h2.command.Parser.parse(Parser.java:275)
at org.h2.command.Parser.parse(Parser.java:247)
at org.h2.command.Parser.prepare(Parser.java:201)
at org.h2.command.Parser.prepareCommand(Parser.java:214)
at org.h2.engine.Session.prepareLocal(Session.java:426)
at org.h2.engine.Session.prepareCommand(Session.java:374)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1100)
at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:71)
at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:243)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)
at org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:145)
at org.hibernate.id.enhanced.SequenceStructure$1.getNextValue(SequenceStructure.java:106)
... 81 more

Any idea of what happens, a miss in my config ? I found this post and try the patch, it does not resolve the error. Thanks for your help !

Answer 1

Please ensure the sequence is created. If it is created, then it works for me:

create sequence SQ_PERSON_ID;
select SQ_PERSON_ID.nextval from dual;

If it is not created, then the same error message is thrown as you got.

Answer 2

I was working on h2 with Oracle mode but all the above solutions mentioned above didn't work for me. Although after some research I found that this query will work fine for fetching the next value in the sequence.

select nextval('SchemaName', 'SequenceName');

Answer 3

As @longliveenduro mentioned

It's definitely the H2 way to say "Sequence does not exist".

I had the exact same problem and found out that the sequence was not being created in h2's in-memory DB. I solved the problem by adding:

CREATE SEQUENCE SQ_PERSON_ID
MINVALUE 1
MAXVALUE 9223372036854775807
START WITH 1
INCREMENT BY 1
CACHE 8
NOCYCLE;

in: test/resources/schema.sql

It worked for me.