Re: Portable interpretation of jdbc SQLException for SERIALIZABLE

Dave,

If you use the 7.4 driver and database you will get real SQLState codes.
  That is new functionality in 7.4.

--Barry

Dave Tenny wrote:
> FYI, additional testing with the software revs indicated below
> reveals that the SQLException SQLState is null, and the vendor specific
> error code is zero.
> That seems to leave me stuck with interpreting the exception string
> content (ugh!)
> unless someone has additional information.
>
> Dave Tenny wrote:
>
>> I'm getting the following /expected/ exception:
>>
>> java.sql.SQLException: ERROR:  Can't serialize access due to
>> concurrent update
>>
>>    at org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:131)
>>    at
>> org.postgresql.jdbc1.AbstractJdbc1Connection.ExecSQL(AbstractJdbc1Connection.java:505)
>>
>>    at
>> org.postgresql.jdbc1.AbstractJdbc1Statement.execute(AbstractJdbc1Statement.java:320)
>>
>>    at
>> org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:48)
>>
>>    at
>> org.postgresql.jdbc1.AbstractJdbc1Statement.executeUpdate(AbstractJdbc1Statement.java:197)
>>
>>    at
>> org.postgresql.jdbc1.AbstractJdbc1Statement.executeUpdate(AbstractJdbc1Statement.java:183)
>>
>>    at DbMutex.updateRow(DbMutex.java:70)
>>    at DbMutex.run(DbMutex.java:38)
>>
>> So I know I need to restart my transaction.  What I don't know
>> is how to portably interpret this particular SQLException instance as one
>> that justifies a transaction restart, as opposed to the myriad other
>> types of SQLExceptions I might get.
>>
>> So two questions:
>>
>> 1) How do I know this is an exception indicative of the need for a
>> transaction restart in PostgreSQL?
>> 2) How do I do this portably? (I.e. in a database neutral fashion).
>>
>> The Sun spec on SQLException talks about XOPEN SQLstate interpretation,
>> I'm still looking for documentation on that puppy.  It also talks
>> about SQL99.
>> At this point I'm unsure which applies to this exception for postgresql.
>>
>> I'm using PostgreSQL 7.3.3 and Java 1.4.2 on linux, though hopefully
>> none of that
>> makes a difference.
>>
>> Thanks for any tips.
>>
>
>
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