ORA-01531 错误是一个 Oracle 数据库错误代码,具体含义为“无法索引由列组成的表达式”。这通常表明你尝试在一个不允许索引的表达式上创建索引,或者查询中使用了 Oracle 无法为其生成索引的表达式。 2. 可能导致ORA-01531错误的原因 表达式包含函数:如果你在索引定义中使用了函数(如 UPPER(column_name)),Oracle 通常...
ORA-01531: a database already open by the instance Cause:During ALTER DATABASE, an attempt was ...
ORA-01531: a database already open by the instanceMy backup script is as follows.SET COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE;Log In To view full details, sign in to My Oracle Support Community. Register Don't have a My Oracle Support Community account...
ORA-01531: a database already open by the instanceMy backup script is as follows.SET COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE;Log In To view full details, sign in to My Oracle Support Community. Register Don't have a My Oracle Support Community account...