My ASH wait chains scripts started returning the ORA-12850 error on Oracle 19c RAC installations: SQL> @ash/dash_wait_chains program2||event2 1=1 sysdate-1 sysdate -- Display ASH Wait Chain Signatures script v0.5 BETA by Tanel Poder ( https://tanelpoder.com ) , REPLACE(SYS_CONNECT_BY_PATH(program2||event2, '->'), '->', ' -> ')||CASE WHEN CONNECT_BY_ISLEAF = 1 AND d.blocking_session IS NOT NULL THEN ... ERROR at line 63: ORA-12850: Could not allocate slaves on all specified instances: 2 needed...
