Hello,
I'm sometimes getting this error from the PostgreSQL JDBC driver
(version 42.2.10):
java.io.IOException: Unexpected packet type: 25
(Full stack trace at the end of this message).
Looks a lot like a bug or a version mismatch. The latter is unlikely
since the driver is relatively new but the server is a bit older (11.4).
If it were a bug I would expect more people to reproduce it, but I
haven't found anything on google (the only result is not even about
PostgreSQL).
For the moment I have no idea how to reproduce this error. It appears to
happen just randomly.
I'd like to know if someone can suggest a way to gather more information
so I can eventually turn it into reproducible steps and fill a bug report.
Also, can pg_bouncer be related?
Thanks.
Ignacio
Stack trace:
org.hibernate.TransactionException: commit failed
at
org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:185)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
(8 stack frames of custom application software omitted)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[?:1.8.0_191]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[?:1.8.0_191]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[?:1.8.0_191]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[?:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: org.hibernate.TransactionException: unable to commit against
JDBC connection
at
org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doCommit(JdbcTransaction.java:116)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
at
org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:178)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
... 13 more
Caused by: org.postgresql.util.PSQLException: An I/O error occurred
while sending to the backend.
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:338)
~[postgresql-42.2.10.jar:42.2.10]
at
org.postgresql.jdbc.PgConnection.executeTransactionCommand(PgConnection.java:829)
~[postgresql-42.2.10.jar:42.2.10]
at org.postgresql.jdbc.PgConnection.commit(PgConnection.java:851)
~[postgresql-42.2.10.jar:42.2.10]
at
org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doCommit(JdbcTransaction.java:112)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
at
org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:178)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
... 13 more
Caused by: java.io.IOException: Unexpected packet type: 25
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2395)
~[postgresql-42.2.10.jar:42.2.10]
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:311)
~[postgresql-42.2.10.jar:42.2.10]
at
org.postgresql.jdbc.PgConnection.executeTransactionCommand(PgConnection.java:829)
~[postgresql-42.2.10.jar:42.2.10]
at org.postgresql.jdbc.PgConnection.commit(PgConnection.java:851)
~[postgresql-42.2.10.jar:42.2.10]
at
org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doCommit(JdbcTransaction.java:112)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
at
org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:178)
~[hibernate-core-4.1.4.Final.jar:4.1.4.Final]
... 13 more
=> select version();
version
---------------------------------------------------------------------------------------------------------
PostgreSQL 11.4 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5
20150623 (Red Hat 4.8.5-36), 64-bit
(1 row)
