Why is this important?
If processes are not unregistered from database, they are orphaned.
Hence:
unregister replicat $replicat_name DATABASE
unregister extract $extract_name DATABASE
$ ./ggsci Oracle GoldenGate Command Interpreter for Oracle Version 12.3.0.1.0 OGGCORE_12.3.0.1.0_PLATFORMS_170721.0154_FBO Linux, x64, 64bit (optimized), Oracle 12c on Jul 21 2017 23:31:13 Operating system character set identified as UTF-8. Copyright (C) 1995, 2017, Oracle and/or its affiliates. All rights reserved. GGSCI 1> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER RUNNING EXTRACT RUNNING E_DB 00:00:05 00:00:00 EXTRACT RUNNING P_DB 00:00:00 00:00:00 REPLICAT RUNNING R_OWL 00:00:00 00:00:03 REPLICAT STOPPED R_JAY 00:00:00 00:24:15 GGSCI 2> info E_DB debug EXTRACT E_DB Last Started 2018-06-18 08:48 Status RUNNING Checkpoint Lag 00:00:05 (updated 00:00:00 ago) Process ID 365696 Log Read Checkpoint Oracle Integrated Redo Logs 2018-07-13 20:20:45 Seqno 151864, RBA 31183128 SCN 188.1068581841 (808522433489) GGSCI 3> info r_jay debug REPLICAT R_JAY Last Started 2018-06-16 11:42 Status STOPPED INTEGRATED Checkpoint Lag 00:00:00 (updated 578:24:33 ago) Log Read Checkpoint File ./dirdat/ 2018-06-19 17:55:08.604509 RBA 409140739 GGSCI 4> info r_owl debug REPLICAT R_OWL Last Started 2018-06-16 11:42 Status RUNNING Checkpoint Lag 00:00:00 (updated 00:00:03 ago) Process ID 284878 Log Read Checkpoint File ./dirdat/ 2018-07-13 20:21:09.000628 RBA 132791008 GGSCI 5> exit SQL> @pr "select * from DBA_APPLY" APPLY_NAME : OGG$R_JAY QUEUE_NAME : OGGQ$R_JAY APPLY_CAPTURED : YES APPLY_USER : GGSUSER13 APPLY_TAG : 00 STATUS : DISABLED MAX_APPLIED_MESSAGE_NUMBER : 0 STATUS_CHANGE_TIME : 19-jun-2018 17:56:28 MESSAGE_DELIVERY_MODE : CAPTURED PURPOSE : GoldenGate Apply LCRID_VERSION : 2 ------------------------- APPLY_NAME : OGG$R_MIG - ORPHANED REPLICAT AS PROCESS DOES NOT EXISTS QUEUE_NAME : OGGQ$R_MIG QUEUE_OWNER : GGSUSER12 APPLY_CAPTURED : YES APPLY_USER : GGSUSER12 APPLY_TAG : 00 STATUS : DISABLED MAX_APPLIED_MESSAGE_NUMBER : 0 STATUS_CHANGE_TIME : 24-feb-2018 07:12:24 MESSAGE_DELIVERY_MODE : CAPTURED PURPOSE : GoldenGate Apply LCRID_VERSION : 2 ------------------------- APPLY_NAME : OGG$E_DB QUEUE_NAME : OGG$Q_E_DB QUEUE_OWNER : GGSUSER13 APPLY_CAPTURED : YES RULE_SET_NAME : RULESET$_9 APPLY_TAG : 00 STATUS : ENABLED MAX_APPLIED_MESSAGE_NUMBER : 0 STATUS_CHANGE_TIME : 18-jun-2018 08:48:02 MESSAGE_DELIVERY_MODE : CAPTURED PURPOSE : GoldenGate Capture LCRID_VERSION : 2 ------------------------- PL/SQL procedure successfully completed. SQL> @pr "select * from DBA_CAPTURE" CAPTURE_NAME : OGG$CAP_E_DB QUEUE_NAME : OGG$Q_E_DB START_SCN : 776572270090 STATUS : ENABLED CAPTURED_SCN : 808484653323 APPLIED_SCN : 808484649784 USE_DATABASE_LINK : NO FIRST_SCN : 776572270090 SOURCE_DATABASE : DB01 SOURCE_DBID : 689358028 SOURCE_RESETLOGS_SCN : 279476595350 SOURCE_RESETLOGS_TIME : 826720979 LOGMINER_ID : 1 MAX_CHECKPOINT_SCN : 808510343793 REQUIRED_CHECKPOINT_SCN : 808484621637 LOGFILE_ASSIGNMENT : IMPLICIT STATUS_CHANGE_TIME : 18-jun-2018 08:48:04 VERSION : 12.2.0.1.0 CAPTURE_TYPE : LOCAL CHECKPOINT_RETENTION_TIME : 7 PURPOSE : GoldenGate Capture SOURCE_ROOT_NAME : DB01 CLIENT_NAME : E_DB CLIENT_STATUS : ATTACHED OLDEST_SCN : 776572270090 FILTERED_SCN : 773378341423 ------------------------- PL/SQL procedure successfully completed.