After executing a series of insert statements, one insert statement will fail
giving the following exception: Operation not allowed for reason code "1" on table <table_name>

Can anyone suggest reasons what might cause this?

What's the complete error message, including the DB2 message code?

com.ibm.db2.jcc.c.hh: Non-atomic batch failure. The batch was submitted, but at least one exception occurred on an individual member of the batch. Use getNextException() to retrieve the exceptions for specific batched elements.



com.ibm.db2.jcc.c.SqlException: Error for batch element #0: Operation not allowed for reason code "1" on table <table_name>
at com.ibm.db2.jcc.c.ig.d(ig.java(Compiled Code))
at com.ibm.db2.jcc.a.kb.l(kb.java(Compiled Code))
at com.ibm.db2.jcc.a.kb.a(kb.java(Compiled Code))
at com.ibm.db2.jcc.a.w.a(w.java(Inlined Compiled Code))
at com.ibm.db2.jcc.a.ec.b(ec.java(Compiled Code))
at com.ibm.db2.jcc.c.jg.db(jg.java(Inlined Compiled Code))
at com.ibm.db2.jcc.c.jg.b(jg.java(Compiled Code))
at com.ibm.db2.jcc.c.jg.a(jg.java:2818)