Check the current pool status $ srvctl config database -d GRACE2 Database unique name: GRACE2 Database name: GRACE2 Oracle home: /u01/app/oracle/product/11203/racdb Oracle user: oracle Spfile: +DATA/GRACE2/spfileGRACE2.ora Domain: example.com Start options: open Stop options: immediate Database role: PRIMARY Management policy: AUTOMATIC Server pools: GRACE2 Database instances: GRACE21,GRACE22,GRACE23 Disk Groups: DATA Mount point paths: Services: Type: RAC Database is administrator managed $ srvctl status srvpool -a Server pool name: Free Active servers count: 0 Active server names: Server pool name: Generic Active servers count: 3 Active server names: grac1,grac2,grac3 NAME=grac1 STATE=ONLINE NAME=grac2 STATE=ONLINE NAME=grac3 STATE=ONLINE Stop database - Add RAC database to pool - check pool status $ srvctl stop database -d GRACE2 $ srvctl add srvpool -g SrvPool1 -l 1 -u 2 $ srvctl modify database -d GRACE2 -g SrvPool1 $ srvctl status srvpool -a Server pool name: Free Active servers count: 1 Active server names: grac3 NAME=grac3 STATE=ONLINE Server pool name: Generic Active servers count: 0 Active server names: Server pool name: SrvPool1 Active servers count: 2 Active server names: grac1,grac2 NAME=grac1 STATE=ONLINE NAME=grac2 STATE=ONLINE $ srvctl config database -d GRACE2 Database unique name: GRACE2 Database name: GRACE2 Oracle home: /u01/app/oracle/product/11203/racdb Oracle user: oracle Spfile: +DATA/GRACE2/spfileGRACE2.ora Domain: example.com Start options: open Stop options: immediate Database role: PRIMARY Management policy: AUTOMATIC Server pools: SrvPool1 Database instances: Disk Groups: DATA Mount point paths: Services: Type: RAC Database is policy managed