> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/15/client-interfaces/ecpg-embedded-sql-in-c/ecpg-oracle-compat.md).

# 36.16. Oracle Compatibility Mode

## 36.16. Oracle 相容模式

`ecpg` 可在所謂的*Oracle 相容模式*下執行。此模式啟用時，它會嘗試如同 Oracle Pro\*C 一般運作。

具體而言，此模式會從三方面改變 `ecpg`：

* 將接收字串型別的字元陣列以尾端空白填滿至指定長度
* 以零位元組結束這些字元陣列，並在發生截斷時設定指標變數
* 字元陣列接收空字串型別時，將空值指標設為 `-1`

***

原文：[PostgreSQL 15.19 Documentation](https://www.postgresql.org/docs/15/ecpg-oracle-compat.html)


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