GAUSS-02041 -- GAUSS-02050

GAUSS-02041: "could not fsync file '%s': %m"

SQLSTATE: XX000

Description: Files cannot be synchronized.

Solution: Resolve the problem based on concrete error codes.

GAUSS-02042: "could not read file '%s', read %d of %u: %m"

SQLSTATE: XX000

Description: Internal system error.

Solution: Contact technical support.

GAUSS-02043: "replication slot file '%s' has wrong magic %u instead of %u"

SQLSTATE: XX000

Description: The flag in the replication slot file does not match with that in the current version supported.

Solution: Check whether the replication slot file is maliciously modified or whether the current program version is subject to major version upgrade.

GAUSS-02044: "replication slot file '%s' has unsupported version %u"

SQLSTATE: XX000

Description: The version specified in the replication slot file does not match with that in the current version supported.

Solution: Check whether the replication slot file is maliciously modified or whether the current program version is subject to major version upgrade.

GAUSS-02045: "replication slot file '%s' has corrupted length %u"

SQLSTATE: XX000

Description: The read length in the replication slot file does not meet expectations.

Solution: Check whether the replication slot file is maliciously modified or whether the current program version is subject to major version upgrade.

GAUSS-02046: "replication slot file %s: checksum mismatch, is %u, should be %u"

SQLSTATE: XX000

Description: The CRC recorded in the replication slot file is inconsistent with the file CRC.

Solution: Check whether the replication slot file is maliciously modified.

GAUSS-02047: "too many replication slots active before shutdown"

SQLSTATE: XX000

Description: Too many replication slots are activated before the last database shutdown.

Solution: Check whether the max_replication_slots parameter is set to a small value. If it is, set the parameter to a larger value and restart the database.

GAUSS-02048: "wal receiver could not connect to the primary server,the connection info :%s : %s"

SQLSTATE: XX000

Description: The walreceiver thread fails to connect to the primary server. Determine the reason based on the error message.

Solution:"1. Timeout: Check whether it is due to service overload of the primary server. 2. Connection failure: Check whether the primary server is started. "

GAUSS-02049: "could not receive database system version and protocol version from the primary server: %s"

SQLSTATE: XX000

Description: The standby server sends a version verification message to the primary server. The primary server returns a failure message. Resolve the problem based on the "%s" error message.

Solution:"1. If the network connection times out, adjust the current network environment. If the primary server is overloaded, adjust services. 2. If the primary server is shut down unexpectedly, identify the cause. "

GAUSS-02050: "could not get the local protocal version, make sure the PG_PROTOCOL_VERSION is defined"

SQLSTATE: XX000

Description: The local version information fails to be obtained.

Solution: Ensure that the current memory is sufficient.