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The Atlassian's JIRA Subversion plugin must be uninstalled and Subversion re-installed again.

A lot of warnings in the logs: Dangerous use of multiple connections

Subversion ALM stores the Subversion index on the Jira database, therefore a database connection is required to read the data. It works perfectly with thousands of organizations running Subversion ALM with no issues and millions of records. However, it looks like Atlassian added a warning to notice this behavior as risky. None of the customers that reported this trace in the logs reported any other Jira issue (performance, reliability, etc). You might want to increase the database pool.

2020-06-14 13:01:33,619+0200 http-nio-2990-exec-5 WARN admin 781x2920x1 psmhc7 0:0:0:0:0:0:0:1 /projects/DEMO [c.a.jira.ofbiz.ConnectionPoolHealthSqlInterceptor] Dangerous use of multiple connections: taken => count=3; marks=[2-3]; pool=3/8
java.lang.AssertionError: Explicit stack trace requestedat com.atlassian.jira.util.log.RateLimitingLogger.warnWithTrace(RateLimitingLogger.java:124)
at com.atlassian.jira.ofbiz.ConnectionPoolHealthSqlInterceptor$CountHolder.logWarn(ConnectionPoolHealthSqlInterceptor.java:236)
at com.atlassian.jira.ofbiz.ConnectionPoolHealthSqlInterceptor$CountHolder.taken(ConnectionPoolHealthSqlInterceptor.java:252)
at com.atlassian.jira.ofbiz.ConnectionPoolHealthSqlInterceptor.onConnectionTaken(ConnectionPoolHealthSqlInterceptor.java:89)
at com.atlassian.jira.ofbiz.ChainedSQLInterceptor.lambda$onConnectionTaken$0(ChainedSQLInterceptor.java:64)
at com.atlassian.jira.ofbiz.ChainedSQLInterceptor.forEach(ChainedSQLInterceptor.java:93)
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