事件起因：在测试一个数据迁移工具时，源端oracle19c数据迁移到目标端MySQL8.0，提示迁移目标端 Unknown database 'SBTEST'，报错如下：
2022-07-29 10:08:19,155 ERROR com.greatsync.connector.jdbc.internal.ComplexJdbcOutputFormat [] - JDBC executeBatch error, retry times = 0
java.sql.BatchUpdateException: Unknown database 'SBTEST'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_312]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_312]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_312]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_312]
at com.mysql.cj.util.Util.handleNewInstance(Util.java:192) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.util.Util.getInstance(Util.java:167) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.util.Util.getInstance(Util.java:174) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.jdbc.exceptions.SQLError.createBatchUpdateException(SQLError.java:224) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchedInserts(ClientPreparedStatement.java:755) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchInternal(ClientPreparedStatement.java:426) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.mysql.cj.jdbc.StatementImpl.executeBatch(StatementImpl.java:795) ~[mysql-connector-java-8.0.28.jar:8.0.28]
at com.greatsync.connector.jdbc.statement.FieldNamedPreparedStatementImpl.executeBatch(FieldNamedPreparedStatementImpl.java:77) ~[blob_p-90078b57fb2c51eb5935c045d2e493ef0a7d1524-e9c0e1166eea1bd94ba3d5a23c03b9b3:?]
at com.greatsync.connector.jdbc.internal.executor.TableSimpleStatementExecutor.executeBatch(TableSimpleStatementExecutor.java:63) ~[blob_p-90078b57fb2c51eb5935c045d2e493ef0a7d1524-e9c0e1166eea1bd94ba3d5a23c03b9b3:?]
at com.greatsync.connector.jdbc.internal.executor.TableBufferReducedStatementExecutor.executeBatch(TableBufferReducedStatementExecutor.java:121) ~[blob_p-90078b57fb2c51eb5935c045d2e493ef0a7d1524-e9c0e1166eea1bd94ba3d5a23c03b9b3:?]
at com.greatsync.connector.jdbc.internal.ComplexJdbcOutputFormat 来源：https://www.51cto.com/article/717308.html
