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ORA-12154 on PRnn Process at Standby Database (Doc ID 2759156.1)

Last updated on APRIL 02, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

After starting Redo Apply on Standby Database of Data Guard configuration, PRnn process continuously returns ORA-12154 error.

< alert.log on Standby Database >
2020-10-05T22:52:39.399185+09:00
Completed: alter database recover managed standby database disconnect
2020-10-05T23:17:16.218006+09:00
PR00 (PID:101178): Error 12154 received logging on to the standby
PR00 (PID:101178): FAL: Error 12154 connecting to <DB1>,<DB2> for fetching gap sequence
2020-10-05T23:17:16.218248+09:00
ORA-12154: TNS:could not resolve the connect identifier specified

Changes

Setting multiple service names in FAL_SERVER prameter on Standby Database incorrectly.

< example of hitting this case >

fal_server = '<service name of DB1>,<service name of DB2>'

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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