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In addition to application services, the RDBMS also supports two internal services.
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SYS$BACKGROUND is used by the background processes only.
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SYS$USERS is the default service for user sessions that are not associated with application services.
- In our case Since we have not created a service , the default service as provided by oracle SYS$USERS is used.
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/28878983/viewspace-2137054/ ，如需转载，请注明出处，否则将追究法律责任。
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