[jira] [Created] (DERBY-6554) Too much contention followed by assert failure when accessing sequence in transaction that created it

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

Knut Anders Hatlen created DERBY-6554:
-----------------------------------------

             Summary: Too much contention followed by assert failure when accessing sequence in transaction that created it
                 Key: DERBY-6554
                 URL: https://issues.apache.org/jira/browse/DERBY-6554
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.11.0.0
            Reporter: Knut Anders Hatlen


{noformat}
ij version 10.11
ij> connect 'jdbc:derby:memory:db;create=true' as c1;
ij> autocommit off;
ij> create sequence seq;
0 rows inserted/updated/deleted
ij> values next value for seq;
1          
-----------
ERROR X0Y84: Too much contention on sequence SEQ. This is probably caused by an uncommitted scan of the SYS.SYSSEQUENCES catalog. Do not query this catalog directly. Instead, use the SYSCS_UTIL.SYSCS_PEEK_AT_SEQUENCE function to view the current value of a query generator.
ij> rollback;
ERROR 08003: No current connection.
ij> connect 'jdbc:derby:memory:db' as c2;
ij(C2)> autocommit off;
ij(C2)> create sequence seq;
0 rows inserted/updated/deleted
ij(C2)> values next value for seq;
1          
-----------
ERROR 38000: The exception 'org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED Identity being changed on a live cacheable. Old uuidString = 0ddd00a9-0145-98ba-79df-000007d88b08' was thrown while evaluating an expression.
ERROR XJ001: Java exception: 'ASSERT FAILED Identity being changed on a live cacheable. Old uuidString = 0ddd00a9-0145-98ba-79df-000007d88b08: org.apache.derby.shared.common.sanity.AssertFailure'.
{noformat}



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