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在訂單產生DELIVERY ID時經常出現Error: The action can not be performed because the selected records could not be locked?

select SYS_CONTEXT( 'USERENV', 'TERMINAL') terminal, --電腦名稱 SYS_CONTEXT( 'USERENV', 'LANGUAGE') language, --系統語言 SYS_CONTEXT( 'USERENV', 'SESSIONID') sessionid, -- SYS_CONTEXT( 'USERENV', 'INSTANCE') instance, SYS_CONTEXT( 'USERENV', 'ENTRYID') entryid, SYS_CONTEXT( 'USERENV', 'ISDBA') isdba, --是否DBA SYS_CONTEXT( 'USERENV', 'NLS_TERRITORY') nls_territory, --語言區 SYS_CONTEXT( 'USERENV', 'NLS_CURRENCY') nls_currency, --系統預定本幣 SYS_CONTEXT( 'US