AppSync: Os bancos de dados Oracle em execução no disco do ASM são detectados como off-line

Um usuário vê o status do banco de dados como "OK" na GUI do AppSync -> Gerenciamento de cópias -> Cópias -> Aplicativo Oracle.
Mas o plano de serviço que protege esse banco de dados falha na fase de detecção. Um usuário vê os erros abaixo nos registros de eventos.

<DATE & TIME>,Application discovery,21cc64f3-795a-42d0-aab5-818615d0e645,MILE_000005,<AppSync Server>,Application discovery phase for <Database Name> completed with errors
<DATE & TIME>,Application discovery,21cc64f3-795a-42d0-aab5-818615d0e645,ORCL_000104,<AppSync Server>,During discovery, AppSync detected that the following database(s) were offline: <Database Name>. As a result, they will not be available for protection.

Nos logs do servidor, o AppSync envia o comando checkdatabase e, em seguida, apresenta falha:

<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.service.eventservice.EventServiceBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> EVENT [ORCL_000064]: Protecting the Oracle database <Database Name> with hot backup mode disabled.(METADATA: TYPE-INFO, TIME-2022-03-03 10:34:10.227-0600NATIVETIME-2022-03-03 10:34:10.227-0600, HOST-<AppSync Server>, PHASE-Application discovery, THREAD=EE-ManagedExecutorService-default-Thread-5, USER-admin, CATEGORY-GENERIC, SESSIONID-)
<Date  TIME> DEBUG [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> Started Executing isASMRequired 
<Date  TIME> DEBUG [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> DB Name:  <Database Name>
<Date  TIME> DEBUG [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> Completed Executing isASMRequired....
<Date  TIME> DEBUG [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>>  Is ASM required for OracleAPP? : true
<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> ASM Rediscover Dataset Required? true
<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.commands.application.oracle.DiscoverOracleDatasetsCommandBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> Checking ASM and Database instances on host: 192.168.8.206
<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.service.oracleservice.OracleServiceBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> Beginning task for checkDatabase operation on <source host> task=1f5795f8-1932-4eec-8c0b-40a7e74601dc

<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.service.sshservice.SshServiceBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> Copying AppSync request...<ir_message ir_requestId="00000" ir_sessionId="00000" ir_status="0" ir_type="ArchwayRequest" master_id="0" phaseName="" pollMode="SYNC" taskId="0" timeToWait="0"><operation><agent>Oracle</agent><command>checkDatabase</command><parameters><parameter><paramName>oracleSid</paramName><paramValue><Database Name>1</paramValue></parameter><parameter><paramName>oracleHome</paramName><paramValue>/oracle/app/oracle/product/19.0.0.0/dbhome_1</paramValue></parameter></parameters></operation><version>1.0</version></ir_message>

<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.services.agent.AgentServiceBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> String response: <ir_message ir_requestId="00000" ir_sessionId="00000" ir_status="0" ir_type="ArchwayRequest" master_id="0" phaseName="" pollMode="SYNC" taskId="0" timeToWait="0"><operation><agent>Oracle</agent><command>checkDatabase</command><parameters><parameter><paramName>oracleSid</paramName><paramValue><Database Name>1</paramValue></parameter><parameter><paramName>oracleHome</paramName><paramValue>/oracle/app/oracle/product/19.0.0.0/dbhome_1</paramValue></parameter></parameters><result return="0"/><responses><response><![CDATA[<oracleStatus><status>true</status><state>OPEN</state></oracleStatus>]]></response></responses></operation><version>1.0</version></ir_message>

<Date  TIME> INFO [EE-ManagedExecutorService-default-Thread-5] [com.emc.archway.service.eventservice.EventServiceBean] [<AppSync Server>] [] 0fc79d48-60a7-4960-a9dd-558fd6e4e4c8->>> EVENT [ORCL_000104]: During discovery, AppSync detected that the following database(s) were offline: <Database Name>. As a result, they will not be available for protection.

Nos logs do agente, o banco de dados está on-line conforme o estado é OPEN.

<Date  TIME> acp.py[116]:main() Command: checkDatabase
<Date  TIME> oracle.py[1727]:__init__() Info:Setting LD_LIBRARY_PATH=/oracle/app/oracle/product/19.0.0.0/dbhome_1/lib
<Date  TIME> oracle.py[1955]:runProgram() Running ASM command  ::: ['/oracle/app/oracle/product/19.0.0.0/dbhome_1/bin/orabase']
<Date  TIME> oracle.py[5215]:_sqlQuery() SQL*Plus Query: select 'AppSync_entry:'|| status from v$instance;
<Date  TIME> oracle.py[5243]:_sqlQuery() SQL*plus > SQL> SQL> SQL> SQL> SQL> 
<Date  TIME> oracle.py[5243]:_sqlQuery() SQL*plus > 'APPSYNC_ENTRY:'||STATUS
<Date  TIME> oracle.py[5243]:_sqlQuery() SQL*plus > --------------------------------------------
<Date  TIME> oracle.py[5243]:_sqlQuery() SQL*plus > AppSync_entry:OPEN

O banco de dados em execução no disco do ASM e no appsync não consegue localizar o ASM home, pois ele consulta o arquivo oratab para oracle home e ASM home. Considerando que o arquivo oratab não tinha uma entrada para ASM. Ele só tem uma entrada para o banco de dados.

Adicione a entrada no arquivo oratab para a instância de banco de dados e ASM.

Format: <ASM SID>:<grid_home>:Y|N

Exemplo de entrada de nossa configuração de laboratório:

DB1:/u01/app/oracle/product/19c/db_home:N # entry for DB
+ASM:/u01/app/grid/product/19c/grid_home:N # entry for ASM instance