[Stack 8.19.22-SNAPSHOT] [oracle] Failing test daily: system test: (elastic-agent logs - memory) in oracle.memory

- Stack version: 8.19.22-SNAPSHOT
- Package: oracle
- Failing test: system test: (elastic-agent logs - memory)
- DataStream: memory
- Owners:
- @elastic/obs-infraobs-integrations

Failure:
```
test case failed: one or more errors found while examining elastic-agent.logs1593697310: [0] found error "Unit state changed sql/metrics-default-sql/metrics-oracle-599ed7c3-f8ce-4134-957e-bd0a615d0492 (HEALTHY->DEGRADED): Error fetching data for metricset sql.query: cannot open connection: testing connection: user=\"sys\" standalone params={authMode:2 connectionClass: connectionClassLength:0 purity:0 newPassword: newPasswordLength:0 appContext: numAppContext:0 externalAuth:0 externalHandle: pool: tag: tagLength:0 matchAnyTag:0 outTag: outTagLength:0 outTagFound:0 shardingKeyColumns: numShardingKeyColumns:0 superShardingKeyColumns: numSuperShardingKeyColumns:0 outNewSession:0}: ORA-12541: TNS:no listener"
```

First build failed: https://buildkite.com/elastic/integrations/builds/49549

Start by rerunning the oracle system test for the memory DataStream and inspect the elastic-agent logs for the ORA-12541 no-listener failure. The payload names no source file or unit test; done means the oracle memory test completes without the sql.query connection error in a Stack 8.19.22-SNAPSHOT build.

Written by the indexing model from the issue text.