Oracle ECV service monitoring

Last published : Sep 24, 2026
The Extended Content Verification (ECV) monitor on a NetScaler can be used to monitor Oracle databases. To track the state of each load balanced database server in real time, you need to bind a Oracle ECV monitor to each service. The monitor tests the service by sending periodic probes to the service in the form of an SQL Query, sometimes referred to as performing a health check. If the Oracle ECV monitor receives a timely response to its probes and the configured expression evaluates to true , it marks the service as UP. If it does not receive a timely response to the designated number of probes or the configured expression evaluates to false, it marks the service as DOWN. The Netscaler® Oracle ECV monitoring supports all Oracle versions up to 21c and all password based authentication protocols.
Related information

Unsupported security features

The NetScaler Oracle ECV monitor supports only password-based authentication. It doesn’t support all security related features and capabilities.
The following security features are not supported:
  • Data encryption (SQLNET.ENCRYPTION_SERVER=required)
  • Data integrity (SQLNET.CRYPTO_CHECKSUM_SERVER=required)
  • Long identifiers (O8L_LI)
  • TLS authentication/Encryption
  • External authentication services, such as Kerberos and Radius
  • Compression
  • Oracle wallet