GDS 命令的使用 srvctl service TAF application continuity

文档中prim and stdy在同一台机器上，不同机器需要添加address list

TAF ENABLED GLOBAL SERVICE in GDS ENVIRONMNET 12C. (Doc ID 2283193.1)

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In this Document Goal Solution APPLIES TO: Oracle Database - Enterprise Edition - Version 12.1.0.1 and later Oracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Express Cloud Service - Version N/A and later Oracle Database Exadata Cloud Machine - Version N/A and later Oracle Cloud Infrastructure - Database Service - Version N/A and later Information in this document applies to any platform. GOAL NOTE: In the images and/or the document content below, the user information and environment data used represents fictitious data from the Oracle sample schema(s),Public Documentation delivered with an Oracle database product or other training material. Any similarity to actual environments, actual persons, living or dead, is purely coincidental and not intended in any manner. For the purposes of this document, the following fictitious environment is used as an example to describe the procedure: NETWORK_NAME: SERVICE: prim.stpool.oradbcloud REGIONS: stregion DATABASE: STDB1, DB1 SERVICE: prim.stpool.oradbcloud Goal of this article is to explain how we can create the TAF enabled Global Data Services in 12c environment and it will allow application continuity. SOLUTION  ++ Global Service PRIM is created as below: GDSCTL>add service -service prim -gdspool stpool -preferred_all -role PRIMARY -tafpolicy BASIC -failovertype SELECT -failovermethod BASIC -failoverretry 20 -failoverdelay 15  GDSCTL>config service -service prim Catalog connection is established Name: prim Network name: prim.stpool.oradbcloud Pool: stpool Started: Yes Preferred all: Yes Locality: ANYWHERE Region Failover: No Role: PRIMARY Primary Failover: No Lag: ANY Runtime Balance: SERVICE_TIME Connection Balance: LONG Notification: Yes TAF Policy: BASIC Policy: AUTOMATIC DTP: No Failover Method: BASIC Failover Type: SELECT Failover Retries: 20 Failover Delay: 15 Edition: PDB: Commit Outcome: Retention Timeout: Replay Initiation Timeout: Session State Consistency: DYNAMIC SQL Translation Profile: Databases ------------------------ Database Preferred Status -------- --------- ------ db1 Yes Enabled stdb1 Yes Enabled   Client Side TNS enrty: PRIM = (DESCRIPTION= (FAILOVER=on) (ADDRESS_LIST= (LOAD_BALANCE=ON) (ADDRESS=(PROTOCOL = TCP)(host= localhost.localdomain)(port=1522))) (CONNECT_DATA= (SERVICE_NAME=prim.stpool.oradbcloud) (REGION=stregion) (FAILOVER_MODE= (TYPE=SELECT) (METHOD=basic) (RETRIES=20) (DELAY=15)) ) ))  Test the Select during switchover: SQL> exit Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options [oracle@localhost ~]$ sqlplus sys/<PASSWORD>@prim as sysdba SQL*Plus: Release 12.1.0.1.0 Production on Tue Jul 4 16:21:46 2017 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options SQL>select * from dba_objects; At the same time issue switchover from the broker. DGMGRL> switchover to "DB1" Performing switchover NOW, please wait... New primary database "DB1" is opening... Operation requires startup of instance "stdb1" on database "STDB1" Starting instance "stdb1"... ORACLE instance started. Database mounted. Database opened. Switchover succeeded, new primary is "DB1" DGMGRL> switchover to "STDB1" Performing switchover NOW, please wait... Operation requires a connection to instance "stdb1" on database "STDB1" Connecting to instance "stdb1"... Connected as SYSDBA. New primary database "STDB1" is opening... Operation requires startup of instance "db1" on database "DB1" Starting instance "db1"... ORACLE instance started. Database mounted. Database opened. Switchover succeeded, new primary is "STDB1" Result of select: SHARING E O ------------- - - NONE Y OWNER -------------------------------------------------------------------------------- OBJECT_NAME -------------------------------------------------------------------------------- SUBOBJECT_NAME -------------------------------------------------------------------------------- OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE CREATED LAST_DDL_ ---------- -------------- ----------------------- --------- --------- TIMESTAMP STATUS T G S NAMESPACE ------------------- ------- - - - ---------- EDITION_NAME -------------------------------------------------------------------------------- SHARING E O ------------- - - >>>>>>>>>select paused during switchover and then continued instead of throwing ORA-03113 error. OWNER -------------------------------------------------------------------------------- OBJECT_NAME -------------------------------------------------------------------------------- SUBOBJECT_NAME -------------------------------------------------------------------------------- OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE CREATED LAST_DDL_ ---------- -------------- ----------------------- --------- --------- TIMESTAMP STATUS T G S NAMESPACE ------------------- ------- - - - ---------- EDITION_NAME -------------------------------------------------------------------------------- SHARING E O ------------- - - NONE N OWNER -------------------------------------------------------------------------------- OBJECT_NAME -------------------------------------------------------------------------------- SUBOBJECT_NAME -------------------------------------------------------------------------------- OBJECT_ID DATA_OBJECT_ID OBJECT_TYPE CREATED LAST_DDL_ ---------- -------------- ----------------------- --------- --------- TIMESTAMP STATUS T G S NAMESPACE ------------------- ------- - - - ---------- EDITION_NAME -------------------------------------------------------------------------------- SHARING E O ------------- - - 90801 rows selected.