diff --git a/edb/server/config/__init__.py b/edb/server/config/__init__.py
index 6ddd9fdd2a4..45b4176c7f7 100644
--- a/edb/server/config/__init__.py
+++ b/edb/server/config/__init__.py
@@ -18,7 +18,7 @@
 
 
 from __future__ import annotations
-from typing import Any, Mapping
+from typing import Any, Literal, Mapping, TypedDict
 
 import immutables
 
@@ -51,9 +51,20 @@
     'get_compilation_config',
     'coerce_single_value',
     'QueryCacheMode',
+    'ConState', 'ConStateType',
 )
 
 
+# See edb/server/pgcon/connect.py for documentation of the types
+ConStateType = Literal['C', 'B', 'A', 'E']
+
+
+class ConState(TypedDict):
+    name: str
+    value: Any
+    type: ConStateType
+
+
 def lookup(
     name: str,
     *configs: Mapping[str, SettingValue],
diff --git a/edb/server/main.py b/edb/server/main.py
index c5dbf4e9394..93deb9b0a1e 100644
--- a/edb/server/main.py
+++ b/edb/server/main.py
@@ -197,6 +197,7 @@ async def _run_server(
     do_setproctitle: bool,
     new_instance: bool,
     compiler_state: edbcompiler.CompilerState,
+    init_con_data: list[config.ConState],
 ):
 
     sockets = service_manager.get_activation_listen_sockets()
@@ -216,6 +217,7 @@ async def _run_server(
             backend_adaptive_ha=args.backend_adaptive_ha,
             extensions_dir=args.extensions_dir,
         )
+        tenant.set_init_con_data(init_con_data)
         tenant.set_reloadable_files(
             readiness_state_file=args.readiness_state_file,
             jwt_sub_allowlist_file=args.jwt_sub_allowlist_file,
@@ -522,10 +524,12 @@ async def run_server(
                 compiler_state.config_spec,
             )
 
-            sys_config, backend_settings = initialize_static_cfg(
-                args,
-                is_remote_cluster=True,
-                config_spec=compiler_state.config_spec,
+            sys_config, backend_settings, init_con_data = (
+                initialize_static_cfg(
+                    args,
+                    is_remote_cluster=True,
+                    config_spec=compiler_state.config_spec,
+                )
             )
             with _internal_state_dir(runstate_dir, args) as (
                 int_runstate_dir,
@@ -547,6 +551,7 @@ async def run_server(
                     internal_runstate_dir=int_runstate_dir,
                     do_setproctitle=do_setproctitle,
                     compiler_state=compiler_state,
+                    init_con_data=init_con_data,
                 )
         except server.StartupError as e:
             abort(str(e))
@@ -606,7 +611,7 @@ async def run_server(
 
         new_instance, compiler_state = await _init_cluster(cluster, args)
 
-        _, backend_settings = initialize_static_cfg(
+        _, backend_settings, init_con_data = initialize_static_cfg(
             args,
             is_remote_cluster=not is_local_cluster,
             config_spec=compiler_state.config_spec,
@@ -663,6 +668,7 @@ async def run_server(
                     do_setproctitle=do_setproctitle,
                     new_instance=new_instance,
                     compiler_state=compiler_state,
+                    init_con_data=init_con_data,
                 )
 
     except server.StartupError as e:
@@ -810,7 +816,9 @@ def initialize_static_cfg(
     args: srvargs.ServerConfig,
     is_remote_cluster: bool,
     config_spec: config.Spec
-) -> Tuple[Mapping[str, config.SettingValue], Dict[str, str]]:
+) -> Tuple[
+    Mapping[str, config.SettingValue], Dict[str, str], list[config.ConState]
+]:
     result = {}
     init_con_script_data = []
     backend_settings = {}
@@ -898,11 +906,7 @@ def iter_environ():
     if args.port:
         add_config("listen_port", args.port, command_line_argument)
 
-    if init_con_script_data:
-        from . import pgcon
-        pgcon.set_init_con_script_data(init_con_script_data)
-
-    return immutables.Map(result), backend_settings
+    return immutables.Map(result), backend_settings, init_con_script_data
 
 
 if __name__ == '__main__':
diff --git a/edb/server/multitenant.py b/edb/server/multitenant.py
index c4fdbfc33c1..f66f5b50ceb 100644
--- a/edb/server/multitenant.py
+++ b/edb/server/multitenant.py
@@ -70,6 +70,7 @@
 class MultiTenantServer(server.BaseServer):
     _config_file: pathlib.Path
     _sys_config: Mapping[str, config.SettingValue]
+    _init_con_data: list[config.ConState]
     _backend_settings: Mapping[str, str]
 
     _tenants_by_sslobj: MutableMapping
@@ -89,6 +90,7 @@ def __init__(
         *,
         compiler_pool_tenant_cache_size: int,
         sys_config: Mapping[str, config.SettingValue],
+        init_con_data: list[config.ConState],
         backend_settings: Mapping[str, str],
         sys_queries: Mapping[str, bytes],
         report_config_typedesc: dict[defines.ProtocolVersion, bytes],
@@ -97,6 +99,7 @@ def __init__(
         super().__init__(**kwargs)
         self._config_file = config_file
         self._sys_config = sys_config
+        self._init_con_data = init_con_data
         self._backend_settings = backend_settings
         self._compiler_pool_tenant_cache_size = compiler_pool_tenant_cache_size
 
@@ -243,6 +246,7 @@ async def _create_tenant(self, conf: TenantConfig) -> edbtenant.Tenant:
             max_backend_connections=max_conns,
             backend_adaptive_ha=conf.get("backend-adaptive-ha", False),
         )
+        tenant.set_init_con_data(self._init_con_data)
         tenant.set_reloadable_files(
             readiness_state_file=conf.get("readiness-state-file"),
             jwt_sub_allowlist_file=conf.get("jwt-sub-allowlist-file"),
@@ -429,6 +433,7 @@ async def run_server(
     args: srvargs.ServerConfig,
     *,
     sys_config: Mapping[str, config.SettingValue],
+    init_con_data: list[config.ConState],
     backend_settings: Mapping[str, str],
     sys_queries: Mapping[str, bytes],
     report_config_typedesc: dict[defines.ProtocolVersion, bytes],
@@ -444,6 +449,7 @@ async def run_server(
         ss = MultiTenantServer(
             multitenant_config_file,
             sys_config=sys_config,
+            init_con_data=init_con_data,
             backend_settings=backend_settings,
             sys_queries=sys_queries,
             report_config_typedesc=report_config_typedesc,
diff --git a/edb/server/pgcon/__init__.py b/edb/server/pgcon/__init__.py
index c6bc771fb67..2edf5755519 100644
--- a/edb/server/pgcon/__init__.py
+++ b/edb/server/pgcon/__init__.py
@@ -31,14 +31,12 @@
 )
 from .connect import (
     pg_connect,
-    set_init_con_script_data,
     SETUP_TEMP_TABLE_SCRIPT,
     SETUP_CONFIG_CACHE_SCRIPT,
 )
 
 __all__ = (
     'pg_connect',
-    'set_init_con_script_data',
     'PGConnection',
     'BackendError',
     'BackendConnectionError',
diff --git a/edb/server/pgcon/connect.py b/edb/server/pgcon/connect.py
index 7d912b76c70..051871eeb13 100644
--- a/edb/server/pgcon/connect.py
+++ b/edb/server/pgcon/connect.py
@@ -18,12 +18,10 @@
 
 from __future__ import annotations
 
-import json
 import logging
 import textwrap
 
 from edb.pgsql.common import quote_ident as pg_qi
-from edb.pgsql.common import quote_literal as pg_ql
 from edb.pgsql import params as pg_params
 from edb.server import pgcon
 
@@ -33,7 +31,6 @@
 logger = logging.getLogger('edb.server')
 
 INIT_CON_SCRIPT: bytes | None = None
-INIT_CON_SCRIPT_DATA = ''
 
 # The '_edgecon_state table' is used to store information about
 # the current session. The `type` column is one character, with one
@@ -45,6 +42,8 @@
 #   a corresponding Postgres config setting.
 # * 'A': an instance-level config setting from command-line arguments
 # * 'E': an instance-level config setting from environment variable
+#
+# Please also update ConStateType in edb/server/config/__init__.py if changed.
 SETUP_TEMP_TABLE_SCRIPT = '''
         CREATE TEMPORARY TABLE _edgecon_state (
             name text NOT NULL,
@@ -82,8 +81,6 @@ def _build_init_con_script(*, check_pg_is_in_recovery: bool) -> bytes:
         {SETUP_TEMP_TABLE_SCRIPT}
         {SETUP_CONFIG_CACHE_SCRIPT}
 
-        {INIT_CON_SCRIPT_DATA}
-
         PREPARE _clear_state AS
             WITH x1 AS (
                 DELETE FROM _config_cache
@@ -193,15 +190,3 @@ async def pg_connect(
             raise
 
     return pgconn
-
-
-def set_init_con_script_data(cfg):
-    global INIT_CON_SCRIPT, INIT_CON_SCRIPT_DATA
-    INIT_CON_SCRIPT = None
-    INIT_CON_SCRIPT_DATA = (
-        f'''
-        INSERT INTO _edgecon_state
-        SELECT * FROM jsonb_to_recordset({pg_ql(json.dumps(cfg))}::jsonb)
-        AS cfg(name text, value jsonb, type text);
-    '''
-    ).strip()
diff --git a/edb/server/pgcon/pgcon.pyi b/edb/server/pgcon/pgcon.pyi
index 7c6821bf028..03eb86cecc1 100644
--- a/edb/server/pgcon/pgcon.pyi
+++ b/edb/server/pgcon/pgcon.pyi
@@ -36,8 +36,6 @@ class BackendConnectionError(BackendError): ...
 class BackendPrivilegeError(BackendError): ...
 class BackendCatalogNameError(BackendError): ...
 
-def set_init_con_script_data(cfg: list[dict[str, Any]]): ...
-
 class PGConnection(asyncio.Protocol):
 
     idle: bool
diff --git a/edb/server/tenant.py b/edb/server/tenant.py
index 77047a6cd38..e8b5358da55 100644
--- a/edb/server/tenant.py
+++ b/edb/server/tenant.py
@@ -42,6 +42,7 @@
 import pickle
 import struct
 import sys
+import textwrap
 import time
 import tomllib
 import uuid
@@ -116,6 +117,8 @@ class Tenant(ha_base.ClusterProtocol):
     _suggested_client_pool_size: int
     _pg_pool: connpool.Pool
     _pg_unavailable_msg: str | None
+    _init_con_data: list[config.ConState]
+    _init_con_sql: bytes | None
 
     _ha_master_serial: int
     _backend_adaptive_ha: adaptive_ha.AdaptiveHASupport | None
@@ -199,6 +202,8 @@ def __init__(
         self._pg_unavailable_msg = None
         self._block_new_connections = set()
         self._report_config_data = {}
+        self._init_con_data = []
+        self._init_con_sql = None
 
         # DB state will be initialized in init().
         self._dbindex = None
@@ -694,6 +699,21 @@ def terminate_sys_pgcon(self) -> None:
             self.__sys_pgcon = None
         del self._sys_pgcon_waiter
 
+    def set_init_con_data(self, data: list[config.ConState]) -> None:
+        self._init_con_data = data
+        self._init_con_sql = None
+        if data:
+            from edb.pgsql import common
+
+            quoted_json = common.quote_literal(json.dumps(data))
+            self._init_con_sql = textwrap.dedent(
+                f'''
+                    INSERT INTO _edgecon_state
+                        SELECT * FROM jsonb_to_recordset({quoted_json}::jsonb)
+                            AS cfg(name text, value jsonb, type text);
+                '''
+            ).strip().encode()
+
     async def _pg_connect(
         self,
         dbname: str,
@@ -713,6 +733,10 @@ async def _pg_connect(
             )
             if self._server.stmt_cache_size is not None:
                 rv.set_stmt_cache_size(self._server.stmt_cache_size)
+
+            if self._init_con_sql is not None:
+                await rv.sql_execute(self._init_con_sql)
+
         except Exception:
             metrics.backend_connection_establishment_errors.inc(
                 1.0, self._instance_name