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DB2 zOS does not always support UNICODE for Current Timestamp #1779

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dazey3 opened this issue Jan 10, 2023 · 0 comments
Closed

DB2 zOS does not always support UNICODE for Current Timestamp #1779

dazey3 opened this issue Jan 10, 2023 · 0 comments
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@dazey3
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dazey3 commented Jan 10, 2023

DB2Platform defines the query:

SELECT CURRENT TIMESTAMP FROM SYSIBM.SYSDUMMY1

to obtain the database timestamp. However, depending on the DB2 z/OS configuration and JDK, this may not be supported.

Exception:

Exception caught from before_completion synchronization operation: java.nio.charset.UnsupportedCharsetException: Cp1027
	at java.base/java.nio.charset.Charset.forName(Charset.java:529)
	at com.ibm.db2.jcc.am.r.<init>(Unknown Source)
	at com.ibm.db2.jcc.am.q.a(Unknown Source)
	at com.ibm.db2.jcc.am.Agent.getByteToCharConverter(Unknown Source)
	at com.ibm.db2.jcc.t4.gc.a(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.a(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.a(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.a(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.n(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.j(Unknown Source)
	at com.ibm.db2.jcc.t4.bb.d(Unknown Source)
	at com.ibm.db2.jcc.t4.p.c(Unknown Source)
	at com.ibm.db2.jcc.t4.vb.j(Unknown Source)
	at com.ibm.db2.jcc.am.ip.mb(Unknown Source)
	at com.ibm.db2.jcc.am.jp.b(Unknown Source)
	at com.ibm.db2.jcc.am.jp.kc(Unknown Source)
	at com.ibm.db2.jcc.am.jp.executeQuery(Unknown Source)
	at com.ibm.ws.rsadapter.jdbc.WSJdbcPreparedStatement.executeQuery(WSJdbcPreparedStatement.java:475)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:1018)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:653)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:560)
	at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2070)
	at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:310)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:262)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:248)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:332)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelect(DatasourceCallQueryMechanism.java:314)
	at org.eclipse.persistence.queries.DataReadQuery.executeNonCursor(DataReadQuery.java:197)
	at org.eclipse.persistence.queries.DataReadQuery.executeDatabaseQuery(DataReadQuery.java:152)
	at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:910)
	at org.eclipse.persistence.queries.DataReadQuery.execute(DataReadQuery.java:137)
	at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:809)
@dazey3 dazey3 self-assigned this Jan 10, 2023
rfelcman pushed a commit that referenced this issue Jan 30, 2023
for #1779

For non-IBM JDKs, against DB2 zOS, the existing test `org.eclipse.persistence.jpa.test.version.TestVersioning.testTemporalVersionField1()` fails:
```sql
<error message="java.nio.charset.UnsupportedCharsetException: Cp1027" type="javax.persistence.RollbackException">javax.persistence.RollbackException: java.nio.charset.UnsupportedCharsetException: Cp1027
	at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:159)
	at org.eclipse.persistence.jpa.test.version.TestVersioning.testTemporalVersionField1(TestVersioning.java:62)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at org.eclipse.persistence.jpa.test.framework.EmfRunner.run(EmfRunner.java:40)
Caused by: java.nio.charset.UnsupportedCharsetException: Cp1027
	at java.base/java.nio.charset.Charset.forName(Charset.java:529)
	at com.ibm.db2.jcc.am.x.&lt;init&gt;(x.java:20)
	at com.ibm.db2.jcc.am.w.a(w.java:12)
	at com.ibm.db2.jcc.am.Agent.getByteToCharConverter(Agent.java:497)
	at com.ibm.db2.jcc.t4.a8.a(a8.java:2438)
	at com.ibm.db2.jcc.t4.ab.a(ab.java:4350)
	at com.ibm.db2.jcc.t4.ab.a(ab.java:2777)
	at com.ibm.db2.jcc.t4.ab.a(ab.java:2698)
	at com.ibm.db2.jcc.t4.ab.q(ab.java:1546)
	at com.ibm.db2.jcc.t4.ab.l(ab.java:735)
	at com.ibm.db2.jcc.t4.ab.d(ab.java:111)
	at com.ibm.db2.jcc.t4.p.c(p.java:44)
	at com.ibm.db2.jcc.t4.av.j(av.java:162)
	at com.ibm.db2.jcc.am.k3.an(k3.java:2249)
	at com.ibm.db2.jcc.am.k4.a(k4.java:4638)
	at com.ibm.db2.jcc.am.k4.b(k4.java:4154)
	at com.ibm.db2.jcc.am.k4.bd(k4.java:774)
	at com.ibm.db2.jcc.am.k4.executeQuery(k4.java:739)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:1018)
```

Signed-off-by: William Dazey <wadazey@us.ibm.com>
@dazey3 dazey3 closed this as completed Apr 11, 2023
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