[Stack 8.19.17-SNAPSHOT] [oracle] Failing test daily: system test: (elastic-agent logs - performance) in oracle.performance

- Stack version: 8.19.17-SNAPSHOT
- Package: oracle
- Failing test: system test: (elastic-agent logs - performance)
- DataStream: performance
- Owners:
- @elastic/obs-infraobs-integrations

Failure:
```
test case failed: one or more errors found while examining elastic-agent.logs282642031: [0] found error "Unit state changed sql/metrics-default-sql/metrics-oracle-52f3c868-3f86-4cd6-9bf3-ad1160dcb1a2 (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/45081

Latest failed builds:
- https://buildkite.com/elastic/integrations/builds/45169

Start with the oracle.performance system test and the elastic-agent logs/sql.query failure described in the issue. Compare the first and latest Buildkite runs to determine the scope of the ORA-12541 listener failure. Done means the performance test passes without the reported degraded metricset error.

Written by the indexing model from the issue text.