During query error. Criteria crit = session.createCriteria (getPersistentClass ()); for (Criterion c: criterion) ( crit.add (c); ) return crit.list (); ) The main exception occurs as follows: org.hibernate.exception.GenericJDBCException: could not in ...
hibernate jdbc invalid column index
When the entity contains a similar XxxxType field, in order to performance considerations, the general database field of type TINYINT or INT. And since Java provides enumeration types later, in Java code using the enumeration type to represent this v ...
1 Q: Hibernate always initialize error: java.lang.NoClassDefFoundError Hibernate error when initializing code: java.lang.NoClassDefFoundError: net / [size = medium] [/ size] sf / ehcache / CacheException A: This is new to frequently asked questions. Is be
oracle character set is WE8ISO8859P1, due to historical reasons, can not be modified. Have modified the local NLS_LANG: 1. Through the implementation of select NLS_LANGUAGE, NLS_ISO_CURRENCY, NLS_CHARACTERSET from V $ NLS_PARAMETERS view the server c
Oracle highlights Enterprise face questions 1. Oracle with SQL Server 2005, the difference? Macro: 1. The biggest difference is that platform, oracle can run on different platforms, sql server can only run on windows platform, as windows platform stabilit
1. Optimize the query, should try to avoid full table scans, we should first consider where and orderby create indexes on columns involved. 2. Should be avoided in the where clause null value judgments on the fields, otherwise it will cause the engine to
I have an idea, is to the programming process Exception encountered are collected, thus gradually reduced, or not repeat the experience this kind of exception, or in the future Yudao is also generated that can be immediately recalled cause of the exceptio
ConcurrentHashMap and CopyOnWriteArrayList comparison. Blog categories: Java ConcurrentHashMap ConcurrentHashMap introduced Segment, each Segment is a hashtable, the equivalent of two Hash table, and then lock in the Segment level, and increased concurren