ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

文档解释

ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

Cause: PARALLEL was specified more than once, NOPARALLEL was specified more than once, or both PARALLEL and NOPARALLEL were specified in an ALTER INDEX REBUILD statement.

Action: Remove all but one of the PARALLEL or NOPARALLEL clauses.

ORA-25106 错误指示被解析的子句中只允许指定一个 PARALLEL 或 NOPARALLEL 子句。当这两个子句同时出现在一个语句中时，就会报出这条错误。

官方解释

ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

Cause: Both PARALLEL and NOPARALLEL clauses were specified in the same statement.

Action: Reduce the statement to have one of PARALLEL or NOPARALLEL clauses, and retry it.

常见案例

例1：

在执行以下SQL语句时，可能会出现ORA-25106错误：

CREATE INDEX T_INDEX ON TAB_NFS_NFS_ODE (ID) NOPARALLEL PARALLEL;

一般处理方法及步骤

1.解析错误并确定错误来源：

上述示例中，子句PARALLEL和NOPARALLEL都存在于SQL语句中，这是表达式无效的，从而导致ORA-25106错误。

2.只使用一个子句

要解决此问题，必须删除其中一个子句，因为SQL语句不允许指定两个子句。