FLASHBACK_SCN:
FLASHBACK_SCN parameter specifies the system change number (SCN) that Export uses to enable the Flashback Query utility.
SQL> SELECT current_scn FROM v$database;
CURRENT_SCN
———–
1767104
[oracle@prod101:dpdump source] expdp system/manager directory=DATA_PUMP_DIR dumpfile=sample.dmp logfile=sample.log schemas=sample FLASHBACK_SCN=1739117
Export: Release 18.0.0.0.0 - Production on Fri Aug 17 12:23:01 2018
Version 18.3.0.0.0
Copyright (c) 1982, 2018, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production
Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01": system/******** directory=DATA_PUMP_DIR dumpfile=sample.dmp logfile=sample.log schemas=sample FLASHBACK_SCN=1739117
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
Processing object type SCHEMA_EXPORT/STATISTICS/MARKER
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/TABLESPACE_QUOTA
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
. . exported "SAMPLE"."DEMO" 20.71 KB 38 rows
. . exported "SAMPLE"."DEMO1" 872.4 KB 99901 rows
. . exported "SAMPLE"."DEMO2" 8.568 MB 999901 rows
Master table "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SYSTEM.SYS_EXPORT_SCHEMA_01 is:
/u01/app/oracle/admin/source/dpdump/sample.dmp
Job "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully completed at Fri Aug 17 12:24:53 2018 elapsed 0 00:01:51
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