ORA-01792: maximum number of columns in a table or view is 1000 ORACLE 报错 故障修复 远程处理
文档解释
ORA-01792: maximum number of columns in a table or view is 1000
Cause: An attempt was made to create a table or view with more than 1000 columns, or to add more columns to a table or view which pushes it over the maximum allowable limit of 1000. Note that unused columns in the table are counted toward the 1000 column limit.
Action: If the error is a result of a CREATE command, then reduce the number of columns in the command and resubmit. If the error is a result of an ALTER TABLE command, then there are two options: 1) If the table contained unused columns, remove them by executing ALTER TABLE DROP UNUSED COLUMNS before adding new columns; 2) Reduce the number of columns in the command and resubmit.
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ORA-01792: maximum number of columns in a table or view is 1000是一个用于指示Oracle数据库中表或视图的列数超过1000个的错误信息。
官方解释
Oracle 11.2文档中提到,表或视图的最大列数为1000个:“在所有模式下,单个表或视图的最大列数量为1000个”。
常见案例
当试图创建一个具有1001列或更多列的表或视图时,就会发生这种情况。
正常处理方法及步骤
1. 首先,请确保要在表或视图中创建的列不多于1000个。
2. 如果所需的列数大于1000个,则可以创建多个表/视图,并将数据拆分到不同的表/视图中。
3. 或者可以对任何冗余列进行处理,以减少列数。
4. 此外,可以使用Oracle虚拟列或XML类型,将多个值存储到单个列中。